Abacavir supplier | CasNO.136470-78-5

Name
Abacavir
EINECS 620-487-9
CAS No. 136470-78-5
Article Data23
CAS DataBase
Density 1.7 g/cm³
Solubility
Melting Point 165°
Formula C₁₄H₁₈N₆O
Boiling Point 636 °C at 760 mmHg
Molecular Weight 286.337
Flash Point 338.4 °C
Transport Information
Appearance white powder
Safety
Risk Codes R21; R23/25; R43; R50/53
Molecular Structure
Hazard Symbols T,N
Synonyms {(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-en-1-yl}methanol;Ziagen;2-Cyclopentene-1-methanol, 4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)-, (1S-cis)-;4-Amino-5-chloro-2-ethoxy benzoic acid;Trizivir;2-Cyclopentene-1-methanol, 4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)-, (1S,4R)-;Abacavir (Ziagen);
PSA 101.88000
LogP 1.74650

Synthetic route

: 136522-33-3
(1S,4R)-4-[2-amino-6-chloro-9H-purin-9-yl]-2-cyclopentene-1-methanol

: 765-30-0
Cyclopropylamine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
In ethanol at 70℃;	98%
In ethanol Heating;	72%
Stage #1: (1S,4R)-4-[2-amino-6-chloro-9H-purin-9-yl]-2-cyclopentene-1-methanol; Cyclopropylamine In butan-1-ol at 40 - 70℃; for 5h; Stage #2: With sodium hydrogencarbonate In butan-1-ol at 20 - 25℃; for 1h; Product distribution / selectivity;
In butan-1-ol at 45 - 90℃; for 2h; Product distribution / selectivity;
With sodium hydrogencarbonate In ethanol; chloroform	0.43 g (80%)

: 765-30-0
Cyclopropylamine

: 172015-79-1
(1S,cis)-4-(2-amino-6-chloro-9-H-purin-9-yl)-2-cyclopentene-1-methanol hydrochloride

: 136470-78-5
abacavir

Conditions

Conditions	Yield
In methanol at 70℃; for 12h; Substitution;	90%
Stage #1: (1S,cis)-4-(2-amino-6-chloro-9-H-purin-9-yl)-2-cyclopentene-1-methanol hydrochloride With triethylamine In water Stage #2: Cyclopropylamine In water at 70 - 75℃; Concentration; Solvent; Temperature;	90%
In isopropyl alcohol at 90 - 95℃; for 12h; sealed reactor;
In ethanol at 25 - 78℃; for 6h;
With sodium carbonate In ethanol at 70 - 80℃;	25 g

: 136470-88-7
(-)-N-{6-(cyclopropylamino)-9-[(1R,4S)-4-(hydroxymethyl)cyclopent-2-enyl]-9H-purin-2-yl}isobutyramide

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Stage #1: (-)-N-{6-(cyclopropylamino)-9-[(1R,4S)-4-(hydroxymethyl)cyclopent-2-enyl]-9H-purin-2-yl}isobutyramide With isopropyl alcohol; sodium hydroxide for 1h; Reflux; Stage #2: With hydrogenchloride In water; isopropyl alcohol at 20 - 25℃; pH=7.0 - 7.5; Product distribution / selectivity;	90%
With sodium hydroxide; water; isopropyl alcohol for 1h; Heating / reflux;	77%
With sodium hydroxide; water; isopropyl alcohol for 1h; Product distribution / selectivity; Heating / reflux;	43%

: 7440-44-0
pyrographite

: 765-30-0
Cyclopropylamine

: 172015-79-1
(1S,cis)-4-(2-amino-6-chloro-9-H-purin-9-yl)-2-cyclopentene-1-methanol hydrochloride

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With sodium hydroxide In acetone	90%

...Expand

: 1067882-78-3
6-cyclopropylamine-9-((1R,4S)-4-((triisopropylsilyloxy)methyl)cyclopent-2-enyl)-9H-purin-2-amine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With tetrabutyl ammonium fluoride; water In tetrahydrofuran at 20℃; for 1h; Inert atmosphere;	89%

: {(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-en-1-yl}methanol sulphate

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With sodium hydroxide In water; ethyl acetate at 25 - 45℃; pH=6 - 6.1;	78%

: 1360538-03-9
((1S,4R)-4-(6-(cyclopropylamino)-2-((4-methoxybenzyl)amino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methanol

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With trifluoroacetic acid In chloroform at 50℃; for 72h; Inert atmosphere;	73%

: N6-cyclopropyl-N2-(4-methoxybenzyl)-9-((1R,4S)-4-(((triisopropylsilyl)oxy)methyl)cyclopent-2-en-1-yl)-9H-purine-2,6-diamine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With trifluoroacetic acid In dichloromethane at 60℃; for 60h; Schlenk technique;	70%

: 1108600-46-9
((1S,4R)-4-(2-chloro-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methanol

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With ammonium hydroxide; copper(l) iodide In ethanol at 150℃; for 40h; Schlenk technique; Sealed tube;	63%
Stage #1: ((1S,4R)-4-(2-chloro-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methanol With hydrazine In methanol; water at 50℃; Stage #2: With acetic acid; sodium nitrite In water at 0℃; for 1h; Stage #3: With tin(ll) chloride In ethanol for 2h; Product distribution / selectivity; Heating / reflux;
Stage #1: ((1S,4R)-4-(2-chloro-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methanol With hydrazine In methanol at 50℃; Stage #2: With acetic acid; sodium nitrite In water at 0℃; for 1h; Stage #3: With ammonia; triphenylphosphine In 1,4-dioxane; water for 5h; Product distribution / selectivity; Heating / reflux;
Multi-step reaction with 2 steps 1: dimethyl sulfoxide / 150 °C 2: trifluoroacetic acid / chloroform / 72 h / 50 °C / Inert atmosphere View Scheme
Multi-step reaction with 3 steps 1: hydrazine hydrate / methanol / 50 °C 2: acetic acid; sodium nitrite / water / 1 h / Cooling with ice 3: stannous chloride dihydrate / ethanol / 2 h / Reflux View Scheme

: 765-30-0
Cyclopropylamine

: 171887-04-0
(1R,4S)-1-[(2-amino-6-chloro-5-formamido-4-pyrimidinyl)amino]-4-(hydroxymethyl)-2-cyclopentene

A: 141271-12-7
(1S, 4R)-(4-(2,5-diamino-6-chloro-4-pyrimidinyl)amino)-2-cyclopenten-1-methanol

B: 136470-78-5
abacavir

Conditions

Conditions	Yield
In butan-1-ol at 130℃; for 21h; Substitution; hydrolysis;	A 16% B 60%

...Expand

: 10310-21-1
2-Amino-6-chloropurin

: 765-30-0
Cyclopropylamine

: 268737-86-6
cis-3-benzoyloxy-4-(hydroxymethyl)cyclopentene

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Stage #1: 2-Amino-6-chloropurin; cis-3-benzoyloxy-4-(hydroxymethyl)cyclopentene With 1,2,2,6,6-pentamethylpiperidine; tris(dibenzylideneacetone)dipalladium (0); triphenylphosphine In tetrahydrofuran; dimethyl sulfoxide at 45℃; for 16h; Solid phase reaction; addition; elimination; Stage #2: Cyclopropylamine With N-ethyl-N,N-diisopropylamine In butan-1-ol at 80℃; for 4h; Solid phase reaction; amination; Further stages.;	60%

Yield

Stage #1: 2-Amino-6-chloropurin; cis-3-benzoyloxy-4-(hydroxymethyl)cyclopentene With 1,2,2,6,6-pentamethylpiperidine; tris(dibenzylideneacetone)dipalladium (0); triphenylphosphine In tetrahydrofuran; dimethyl sulfoxide at 45℃; for 16h; Solid phase reaction; addition; elimination;
Stage #2: Cyclopropylamine With N-ethyl-N,N-diisopropylamine In butan-1-ol at 80℃; for 4h; Solid phase reaction; amination; Further stages.;

60%

...Expand

: (+/-)-cis-N-[4-chloro-5-formamido-6-[[4-(hydroxymethyl)-2-cyclopentene-1-yl]amino]-2-pyrimidinyl]acetamide

: 594-45-6
ethanesulfonic acid

: 122-51-0
orthoformic acid triethyl ester

: 765-30-0
Cyclopropylamine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
In hydrogenchloride; methanol; N,N-dimethyl-formamide	19%

...Expand

: 178456-36-5
((1S,4R)-4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methyl acetate

: 136470-78-5
abacavir

Conditions

Conditions	Yield
With sodium hydroxide; water Yield given;
With sodium hydroxide at 20℃;	0.027 g
With sodium hydroxide

: 143395-28-2
(1R,5R)-5-hydroxymethyl-2-cyclopenten-1-ol

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 2: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 3: aq. NaOH View Scheme
Multi-step reaction with 4 steps 1: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 2: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 3: ethanol / 5 h / Heating 4: aq. NaOH View Scheme
Multi-step reaction with 4 steps 1.1: Et3N 2.1: Et3N; 4-DMAP 3.1: aq. HF / acetonitrile 4.1: Pd2(dba)3; PPh3; 1,2,2,6,6-pentamethylpiperidine (pempidine) / tetrahydrofuran; dimethylsulfoxide / 16 h / 45 °C 4.2: 60 percent / EtN(i-Pr)2 / butan-1-ol / 4 h / 80 °C View Scheme

: 120503-69-7
2-amino-6-(cyclopropylamino)purine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 2: aq. NaOH View Scheme

: 10310-21-1
2-Amino-6-chloropurin

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: dimethylsulfoxide / 16 h / 55 °C 2: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 3: aq. NaOH View Scheme

: 162992-44-1
9-[cis-(1'R,4'S)-4'-acetoxymethyl-2'-cyclopenten-1'-yl]-9H-2-amino-6-chloropurine

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: ethanol / 5 h / Heating 2: aq. NaOH View Scheme
Multi-step reaction with 2 steps 1: ethanol 2: NaOH, H2O View Scheme

: 178456-34-3
(1R,2R)-2-acetoxy-1-(acetoxymethyl)-3-cyclopentene

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 2: aq. NaOH View Scheme
Multi-step reaction with 3 steps 1: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 2: ethanol / 5 h / Heating 3: aq. NaOH View Scheme
Multi-step reaction with 2 steps 1: 62 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 2: NaOH, H2O View Scheme
Multi-step reaction with 3 steps 1: 65 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 2: ethanol 3: NaOH, H2O View Scheme

: 178327-18-9
[3(1R,2R),4S]-4-benzyl-3-(2-hydroxycyclopent-3-enecarbonyl)oxazolidin-2-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 78 percent / LiBH4 / tetrahydrofuran; methanol / 1 h / 0 °C 2: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 3: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: aq. NaOH View Scheme
Multi-step reaction with 5 steps 1: 78 percent / LiBH4 / tetrahydrofuran; methanol / 1 h / 0 °C 2: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 3: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: ethanol / 5 h / Heating 5: aq. NaOH View Scheme
Multi-step reaction with 4 steps 1: 78 percent / LiBH4 / tetrahydrofuran; methanol 2: 90 percent / Et3N, DMAP / CH2Cl2 3: 62 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 4: NaOH, H2O View Scheme
Multi-step reaction with 5 steps 1: 78 percent / LiBH4 / tetrahydrofuran; methanol 2: 90 percent / Et3N, DMAP / CH2Cl2 3: 65 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 4: ethanol 5: NaOH, H2O View Scheme

: 178327-17-8
[3(2S,4R),4S]-3-(2-allyl-3-hydroxypent-4-enoyl)-4-benzyloxazolidin-2-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: 97 percent / (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 0.5 h / 25 °C 2: 78 percent / LiBH4 / tetrahydrofuran; methanol / 1 h / 0 °C 3: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 4: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: aq. NaOH View Scheme
Multi-step reaction with 6 steps 1: 97 percent / (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 0.5 h / 25 °C 2: 78 percent / LiBH4 / tetrahydrofuran; methanol / 1 h / 0 °C 3: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 4: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: ethanol / 5 h / Heating 6: aq. NaOH View Scheme
Multi-step reaction with 5 steps 1: 97 percent / Grubbs catalyst / CH2Cl2 2: 78 percent / LiBH4 / tetrahydrofuran; methanol 3: 90 percent / Et3N, DMAP / CH2Cl2 4: 62 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 5: NaOH, H2O View Scheme
Multi-step reaction with 6 steps 1: 97 percent / Grubbs catalyst / CH2Cl2 2: 78 percent / LiBH4 / tetrahydrofuran; methanol 3: 90 percent / Et3N, DMAP / CH2Cl2 4: 65 percent / NaH, Pd(PPh3)4 / tetrahydrofuran; dimethylsulfoxide 5: ethanol 6: NaOH, H2O View Scheme

: 268737-90-2
[4S,2R,3R]-(4-benzyl-2-thioxooxazolidin-3-yl)(2-hydroxycyclopent-3-enyl)methanone

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 85 percent / LiBH4 / tetrahydrofuran; methanol 2: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 3: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: aq. NaOH View Scheme
Multi-step reaction with 5 steps 1: 85 percent / LiBH4 / tetrahydrofuran; methanol 2: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 3: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: ethanol / 5 h / Heating 5: aq. NaOH View Scheme
Multi-step reaction with 5 steps 1.1: 78 percent / LiBH4 / methanol 2.1: Et3N 3.1: Et3N; 4-DMAP 4.1: aq. HF / acetonitrile 5.1: Pd2(dba)3; PPh3; 1,2,2,6,6-pentamethylpiperidine (pempidine) / tetrahydrofuran; dimethylsulfoxide / 16 h / 45 °C 5.2: 60 percent / EtN(i-Pr)2 / butan-1-ol / 4 h / 80 °C View Scheme

: 318488-34-5
(E)-(2R,3R)-2-Allyl-hex-4-ene-1,3-diol

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: Et3N / CH2Cl2 2: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 3: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: aq. NaOH View Scheme
Multi-step reaction with 5 steps 1: Et3N / CH2Cl2 2: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 3: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 4: ethanol / 5 h / Heating 5: aq. NaOH View Scheme

: Acetic acid (1R,2R)-2-acetoxymethyl-1-((E)-propenyl)-pent-4-enyl ester

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 2: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 3: aq. NaOH View Scheme
Multi-step reaction with 4 steps 1: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 2: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 3: ethanol / 5 h / Heating 4: aq. NaOH View Scheme

: 318488-32-3
(E)-(2S,3R)-2-Allyl-1-((S)-4-benzyl-2-thioxo-oxazolidin-3-yl)-3-hydroxy-hex-4-en-1-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: 77 percent / NaBH4 / tetrahydrofuran; H2O 2: Et3N / CH2Cl2 3: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 4: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: aq. NaOH View Scheme
Multi-step reaction with 6 steps 1: 77 percent / NaBH4 / tetrahydrofuran; H2O 2: Et3N / CH2Cl2 3: (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 25 °C 4: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: ethanol / 5 h / Heating 6: aq. NaOH View Scheme

: 318488-35-6
(E)-(2S,3R)-2-Allyl-1-((R)-4-benzyl-2-thioxo-oxazolidin-3-yl)-3-hydroxy-hex-4-en-1-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: 74 percent / (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 1 h / 40 °C 2: 85 percent / LiBH4 / tetrahydrofuran; methanol 3: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 4: 62 percent / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: aq. NaOH View Scheme
Multi-step reaction with 6 steps 1: 74 percent / (Cy3P)2Cl2Ru=CHPh / CH2Cl2 / 1 h / 40 °C 2: 85 percent / LiBH4 / tetrahydrofuran; methanol 3: 90 percent / Et3N; DMAP / CH2Cl2 / 0 °C 4: 0.298 g / NaH; Pd(PPh3)4 / dimethylsulfoxide; tetrahydrofuran / 45 °C 5: ethanol / 5 h / Heating 6: aq. NaOH View Scheme

: 268737-91-3
(1R,5R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-cyclopent-2-enol

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: Et3N; 4-DMAP 2.1: aq. HF / acetonitrile 3.1: Pd2(dba)3; PPh3; 1,2,2,6,6-pentamethylpiperidine (pempidine) / tetrahydrofuran; dimethylsulfoxide / 16 h / 45 °C 3.2: 60 percent / EtN(i-Pr)2 / butan-1-ol / 4 h / 80 °C View Scheme

: 268737-92-4
Benzoic acid (1R,5R)-5-(tert-butyl-dimethyl-silanyloxymethyl)-cyclopent-2-enyl ester

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: aq. HF / acetonitrile 2.1: Pd2(dba)3; PPh3; 1,2,2,6,6-pentamethylpiperidine (pempidine) / tetrahydrofuran; dimethylsulfoxide / 16 h / 45 °C 2.2: 60 percent / EtN(i-Pr)2 / butan-1-ol / 4 h / 80 °C View Scheme

: 268737-89-9
(2S,3R)-2-Allyl-1-((R)-4-benzyl-2-thioxo-oxazolidin-3-yl)-3-hydroxy-pent-4-en-1-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 6 steps 1.1: 97 percent / catalytic ring-closing metathesis (RCM) 2.1: 78 percent / LiBH4 / methanol 3.1: Et3N 4.1: Et3N; 4-DMAP 5.1: aq. HF / acetonitrile 6.1: Pd2(dba)3; PPh3; 1,2,2,6,6-pentamethylpiperidine (pempidine) / tetrahydrofuran; dimethylsulfoxide / 16 h / 45 °C 6.2: 60 percent / EtN(i-Pr)2 / butan-1-ol / 4 h / 80 °C View Scheme

: 79200-56-9
(-)-2-azabicyclo[2.2.1]hept-5-en-3-one

: 136470-78-5
abacavir

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 1.264 g / tetrahydrofuran; H2O / 18 h / 20 - 60 °C 2: 90.5 percent / LiAlH4 / tetrahydrofuran / 19.5 h / 0 °C / Heating 3: 83 percent / Et3N / ethanol / 7 h / Heating 4: 60 percent / butan-1-ol / 21 h / 130 °C View Scheme
Multi-step reaction with 5 steps 1: 1.264 g / tetrahydrofuran; H2O / 18 h / 20 - 60 °C 2: 90.5 percent / LiAlH4 / tetrahydrofuran / 19.5 h / 0 °C / Heating 3: 83 percent / Et3N / ethanol / 7 h / Heating 4: 92 percent / triethylorthoformate; HCl / H2O / 4 h 5: 90 percent / methanol / 12 h / 70 °C View Scheme

: 136470-78-5
abacavir

: (1R,cis)-3-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-1-cyclopentane-1-methanol

Conditions

Conditions	Yield
With hydrogen; palladium on activated charcoal In ethanol under 2585.74 Torr; for 1.5h; Catalytic hydrogenation;	98%

: 141-78-6
ethyl acetate

: 136470-78-5
abacavir

: 178456-36-5
((1S,4R)-4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methyl acetate

Conditions

Conditions	Yield
With heterogeneous zinc/imidazole catalyst for 6.5h; Inert atmosphere; Schlenk technique; Reflux; chemoselective reaction;	98%

: 136470-78-5
abacavir

: {(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-en-1-yl}methanol sulphate

Conditions

Conditions	Yield
With sulfuric acid In water; isopropyl alcohol at 50 - 55℃; for 2h; Concentration; Temperature; Solvent;	95%

: 110-16-7
maleic acid

: 136470-78-5
abacavir

: 1280629-56-2
(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol maleate

Conditions

Conditions	Yield
In ethanol at 25 - 30℃; for 0.25h;	94.3%

: 100-10-7
4-dimethylamino-benzaldehyde

: 136470-78-5
abacavir

: [(1S,4R)-4-(6-Cyclopropylamino-2-{[1-(4-dimethylamino-phenyl)-meth-(E)-ylidene]-amino}-purin-9-yl)-cyclopent-2-enyl]-methanol

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	89%

: 141-82-2
malonic acid

: 136470-78-5
abacavir

: 1280629-49-3
(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol malonate

Conditions

Conditions	Yield
In ethanol at 25 - 70℃; for 0.75h; Product distribution / selectivity;	88%

: 443-69-6
5-fluoro-1H-indole-2,3-dione

: 136470-78-5
abacavir

: 3-[(E)-6-Cyclopropylamino-9-((1R,4S)-4-hydroxymethyl-cyclopent-2-enyl)-9H-purin-2-ylimino]-5-fluoro-1,3-dihydro-indol-2-one

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	87%

: 1579-72-2
2,2,2-trifluoroethyl benzoate

: 136470-78-5
abacavir

: ((1S,4R)-4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methyl benzoate

Conditions

Conditions	Yield
With (μ-oxo)bis[(1,2-ethanediamino-N,N'-bis(salicylidene))iron(III)] In toluene at 120℃; for 5h; Inert atmosphere; Schlenk technique; chemoselective reaction;	87%

: 6974-31-8
11-(acetylthio)undecanoic acid

: 136470-78-5
abacavir

: C27H40N6O3S

Conditions

Conditions	Yield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 0℃; for 5h;	85%

: 66089-45-0
1-ethenesulfonyl-piperidine

: 136470-78-5
abacavir

: N6-cyclopropyl-9-((1R,4S)-4-((2-(piperidin-1-ylsulfonyl)ethoxy)methyl)cyclopent-2-en-1-yl)-9H-purine-2,6-diamine

Conditions

Conditions	Yield
Stage #1: abacavir With silver(I) acetate; 1,2-bis-(diphenylphosphino)ethane In N,N-dimethyl-formamide at -20℃; Inert atmosphere; Stage #2: 1-ethenesulfonyl-piperidine With potassium hexamethylsilazane In tetrahydrofuran; N,N-dimethyl-formamide at -20℃; for 21h; Inert atmosphere; regioselective reaction;	85%

: 136470-78-5
abacavir

: (1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol dihydrobromide

Conditions

Conditions	Yield
With hydrogen bromide In ethanol; water at 25 - 30℃; for 0.75h; Product distribution / selectivity;	83%

: 91-56-5
indole-2,3-dione

: 136470-78-5
abacavir

: 3-[(E)-6-Cyclopropylamino-9-((1R,4S)-4-hydroxymethyl-cyclopent-2-enyl)-9H-purin-2-ylimino]-1,3-dihydro-indol-2-one

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	82%

: 136470-78-5
abacavir

: 1280727-16-3
(1S,4R)-4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol hydrobromide

Conditions

Conditions	Yield
With hydrogen bromide In ethanol; water at 25 - 30℃; for 0.75h; Product distribution / selectivity;	82%

: 608-05-9
5-methyl-indole-2,3-dione

: 136470-78-5
abacavir

: 3-[(E)-6-Cyclopropylamino-9-((1R,4S)-4-hydroxymethyl-cyclopent-2-enyl)-9H-purin-2-ylimino]-5-methyl-1,3-dihydro-indol-2-one

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	78%

: C13H18ClN2O5P

: 136470-78-5
abacavir

: 261909-26-6
(S)-2-{[(1S,4R)-4-(2-Amino-6-cyclopropylamino-purin-9-yl)-cyclopent-2-enylmethoxy]-phenoxy-phosphorylamino}-propionic acid methyl ester

Conditions

Conditions	Yield
Stage #1: abacavir With tert-butylmagnesium chloride In tetrahydrofuran at -78℃; Inert atmosphere; Stage #2: C13H18ClN2O5P In tetrahydrofuran at 20℃; Inert atmosphere;	76%

: 13211-32-0
tert-butoxyacetic acid

: 136470-78-5
abacavir

: ((1S,4R)-4-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methyl 2-(tert-butoxy)acetate

Conditions

Conditions	Yield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 25 - 30℃;	74%

: 2052-49-5
tetra(n-butyl)ammonium hydroxide

: 136470-78-5
abacavir

: C14H17N6O4P(2-)*2C16H36N(1+)

Conditions

Conditions	Yield
Stage #1: abacavir With pyridine; water; trichlorophosphate In acetonitrile at 0℃; Stage #2: With water; ammonium bicarbonate In acetonitrile at 0℃; pH=8; Stage #3: tetra(n-butyl)ammonium hydroxide In water; acetonitrile	72%

: 136470-78-5
abacavir

: 99-93-4
4-Hydroxyacetophenone

: 4-{1-[(E)-6-Cyclopropylamino-9-((1R,4S)-4-hydroxymethyl-cyclopent-2-enyl)-9H-purin-2-ylimino]-ethyl}-phenol

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	71%

: 2052-49-5
tetra(n-butyl)ammonium hydroxide

: 136470-78-5
abacavir

: abacavir monophosphate 1.15*nBu4N+ salt

Conditions

Conditions	Yield
Stage #1: abacavir With trichlorophosphate at 0℃; for 1h; Inert atmosphere; Stage #2: With water for 1h; Cooling with ice; Stage #3: tetra(n-butyl)ammonium hydroxide In water pH=7.0;	71%

: 123-11-5
4-methoxy-benzaldehyde

: 136470-78-5
abacavir

: [(1S,4R)-4-(6-Cyclopropylamino-2-{[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-amino}-purin-9-yl)-cyclopent-2-enyl]-methanol

Conditions

Conditions	Yield
With acetic acid microwave irradiation;	70%

: 111-20-6
1,10-decanedioic acid

: 136470-78-5
abacavir

: C38H50N12O4

Conditions

Conditions	Yield
Stage #1: 1,10-decanedioic acid With dmap; benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; diisopropylamine In N,N-dimethyl-formamide at -20℃; for 0.333333h; Stage #2: abacavir In N,N-dimethyl-formamide at -20 - 20℃; for 16h;	70%

Abacavir Specification

1. Introduction of Abacavir
Abacavir is one kind of white powder. Its IUPAC name is called [(1S,4R)-4-[2-amino-6-(cyclopropylamino)purin-9-yl]cyclopent-2-en-1-yl]methanol. It belongs to classification codes which are Anti-HIV Agents, Anti-Infective Agents, Anti-Retroviral Agents, Antiviral Agents, Enzyme Inhibitors, Nucleic Acid Synthesis Inhibitors, Reverse Transcriptase Inhibitors. Besides, its Product Categories is Bases & Related Reagents;Inhibitors;Intermediates & Fine Chemicals;Nucleotides;Pharmaceuticals. It should be store at refrigerator. Abacavir can be soluble in water. Its Classification Codes is Anti-HIV Agents; Anti-Infective Agents; Anti-Retroviral Agents; Antiviral Agents; Enzyme Inhibitors; Nucleic Acid Synthesis Inhibitors; Reverse Transcriptase Inhibitors.

2. Properties of Abacavir
Physical properties about Abacavir are:
(1) ACD/LogP: -0.78 ; (2) # of Rule of 5 Violations: 0 ; (3) ACD/LogD (pH 7.4): 0.66 ; (4) ACD/BCF (pH 5.5): 1 ; (5) ACD/BCF (pH 7.4): 1.8 ; (6) ACD/KOC (pH 5.5): 4.47 ; (7) ACD/KOC (pH 7.4): 50.77 ; (8) #H bond acceptors: 7 ; (9) #H bond donors: 4 ; (10) #Freely Rotating Bonds: 4 ; (11) Polar Surface Area: 59.31 Å² ; (12) Index of Refraction: 1.864 ; (13) Molar Refractivity: 75.8 cm³ ; (14) Molar Volume: 167.6 cm³ ; (15) Surface Tension: 80.1 dyne/cm ; (16) Density: 1.7 g/cm³ ; (17) Flash Point: 338.4 °C ; (18) Enthalpy of Vaporization: 98.77 kJ/mol ; (19) Boiling Point: 636 °C at 760 mmHg ; (20) Vapour Pressure: 4.77E-17 mmHg at 25°C.

3. Structure Descriptors of Abacavir
(1) SMILES:n3c1c(ncn1[C@H]2/C=C\[C@@H](CO)C2)c(nc3N)NC4CC4;
(2) InChI:InChI=1/C14H18N6O/c15-14-18-12(17-9-2-3-9)11-13(19-14)20(7-16-11)10-4-1-8(5-10)6-21/h1,4,7-10,21H,2-3,5-6H2,(H3,15,17,18,19)/t8-,10+/m1/s1;
(3) InChIKey:MCGSCOLBFJQGHM-SCZZXKLOBP

4. Uses of Abacavir
Abacavir (ABC) is a powerful nucleoside analog reverse transcriptase inhibitor (NRTI) used to treat HIV and AIDS. This compound has been used as a drug with the trade name of Ziagen. It is a kind of antiretroviral drugs approved by the Food and Drug Administration (FDA). It has tablets and oral solution. This drug is used to treat HIV and AIDS in combination with other antiretroviral agents. It can be used for research and manufacture Epzicom tablet.

5. Production of Abacavir
030-8 1.0g (0.0053mol), in the reaction flask was added cesium carbonate 1.75 g (0.0054 mol) and dry DMSO 50ml, stirred under N2 protection, the temperature was raised to 60 °C and stirred at this temperature for 2 h the mixture wascooled to room temperature, then add tetrakis (triphenylphosphine) combined palladium (TTP) [0.85 (0.00074mol)] and compound 030-5 [0.79g (0.0034 mol), DMSO (10 ml) solution was stirred and heated to 65 °C held 65 °C and stirred reaction 2.25h. The you can get the mixture containing compounds 030-9.

To the mixture was added methanol 100ml and K₂CO₃ is 2.10g, the mixture reaction was stirred for 45min at 40 °C, a solid precipitate which was filtered through a Celite layer and the filtrate was evaporated to a small volume under vacuum at 90 °C, and the remaining gum pounding mill was extracted with dichloromethane (100ml * 2) to give a brown solid residue was purified by silica gel (Merck 9385) column chromatography [eluent: dichloromethane / methanol (volume ratio 9:1)] to give a yellow foam was 030 0.26 g, yield 26.8.

Production of Abacavir

Product Name

Abacavir

Synthetic route

Abacavir Specification

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