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Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as
Conditions | Yield |
---|---|
With sodium methylate; tetra-(n-butyl)ammonium iodide In methanol at 40℃; for 3h; | 95% |
Stage #1: Boc-Tyr-OH With sodium hydride In tetrahydrofuran at 20℃; for 0.25h; Inert atmosphere; Stage #2: benzyl bromide With tetra-(n-butyl)ammonium iodide In tetrahydrofuran at 20℃; for 3h; Inert atmosphere; | 91% |
With sodium methylate In methanol at 40℃; for 3h; | 64% |
Stage #1: Boc-Tyr-OH; benzyl bromide With tetra-(n-butyl)ammonium iodide; potassium carbonate In N,N-dimethyl-formamide at 20℃; for 48h; Stage #2: With sodium hydroxide In 1,4-dioxane at 20℃; for 24h; |
Conditions | Yield |
---|---|
Stage #1: Boc-Tyr-OH; benzyl chloride With sodium methylate; tetra-(n-butyl)ammonium iodide In methanol at 40℃; for 24h; Stage #2: With hydrogenchloride In methanol; water | 84% |
di-tert-butyl dicarbonate
benzyl bromide
L-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
Stage #1: L-tyrosine With sodium hydroxide In water for 1.5h; Stage #2: copper(II) sulfate In water for 0.5h; Stage #3: di-tert-butyl dicarbonate; benzyl bromide | 80% |
Stage #1: L-tyrosine With copper(ll) sulfate pentahydrate; sodium hydroxide In water at 60℃; for 1.5h; Stage #2: benzyl bromide In methanol; water at 60℃; for 3h; Stage #3: di-tert-butyl dicarbonate Further stages; | 46% |
Stage #1: L-tyrosine With copper(II) sulfate; sodium hydroxide at 60℃; for 1h; Stage #2: benzyl bromide In methanol at 60℃; for 3h; Stage #3: di-tert-butyl dicarbonate With triethylamine In 1,4-dioxane; water at 0 - 20℃; | 46% |
di-tert-butyl dicarbonate
O-benzyl-S-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With sodium hydroxide In 1,4-dioxane; water at 20 - 40℃; for 18h; pH=10.4; | 70% |
In water; tert-butyl alcohol pH 9.5-10.0; | |
With sodium hydroxide; sodium hydrogencarbonate In 1,4-dioxane at 20℃; | |
With sodium hydroxide In water; tert-butyl alcohol at 20℃; | 2.46 g |
Stage #1: O-benzyl-S-tyrosine With sodium hydroxide In water; tert-butyl alcohol Cooling with ice; Stage #2: di-tert-butyl dicarbonate In water; tert-butyl alcohol at 20℃; Stage #3: With hydrogenchloride In water; tert-butyl alcohol | 2.46 g |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; | 34% |
O-benzyl-S-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With 1,4-dioxane; sodium hydroxide anschliessendes Erwaermen mit Azidokohlensaeure-tert-butylester; |
N-(tert-butyloxycarbonyl) azide
O-benzyl-S-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
1,1-dimethylethyl 2,4,5-trichlorophenyl carbonate
O-benzyl-S-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With triethylamine In tert-butyl alcohol |
O-benzyl-S-tyrosine
tert-butyl chloroformate
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With sodium hydroxide |
N-(tert-butyloxycarbonyl) azide
O'-benzyl-L-tyrosine ethyl ester hydrochloride
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
(i) aq. K2CO3, (ii) /BRN= 1363586/, Py, (iii) aq. NaOH; Multistep reaction; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: aq. NaOH; CuSO4*5H2O / 1 h / Heating 1.2: 73 percent / aq. NaOH / methanol / 20 °C 2.1: aq. NaOH; NaHCO3 / dioxane / 20 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: aq. NaOH; CuSO4*5H2O / 1 h / Heating 1.2: 73 percent / aq. NaOH / methanol / 20 °C 2.1: aq. NaOH; NaHCO3 / dioxane / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: sodium hydroxide / water; tetrahydrofuran / 20 °C 2: sodium methylate / methanol / 3 h / 40 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: water; 1,4-dioxane / 18 h / 20 °C / Cooling with ice 2.1: potassium carbonate; tetra-(n-butyl)ammonium iodide / N,N-dimethyl-formamide / 48 h / 20 °C 2.2: 24 h / 20 °C View Scheme |
O-benzyl-S-tyrosine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With triethylamine; citric acid In 1,4-dioxane; water |
di-tert-butyl dicarbonate
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide / water; tetrahydrofuran / 20 °C 2: sodium methylate / methanol / 3 h / 40 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: water; 1,4-dioxane / 18 h / 20 °C / Cooling with ice 2.1: potassium carbonate; tetra-(n-butyl)ammonium iodide / N,N-dimethyl-formamide / 48 h / 20 °C 2.2: 24 h / 20 °C View Scheme |
N-tert-butoxycarbonyl-O-benzyl-(S)-tyrosine methyl ester
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With sodium hydroxide In methanol; dichloromethane |
(S)-N-(tert-butoxycarbonyl)tyrosine methyl ester
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: potassium carbonate; tetra-(n-butyl)ammonium iodide / acetone / 70 °C 2: sodium hydroxide / methanol; dichloromethane View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: potassium carbonate; tetra-(n-butyl)ammonium iodide / acetone / 70 °C 2: sodium hydroxide / methanol; dichloromethane View Scheme |
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate; methyl-phenyl-thioether In trifluoroacetic acid at 0℃; for 0.5h; | 100% |
With trimethylsilyl trifluoromethanesulfonate; methyl-phenyl-thioether In trifluoroacetic acid at 0℃; for 0.5h; Product distribution; New peptide deprotection procedure: hard-soft acid-base concept; the role of soft bases (thioanisole, dimethylsulfide, diphenylsulfide) employed.; | 100% |
With dimethylsulfide; hydrogen fluoride at 0℃; for 2h; Product distribution; Var.: HF in anisole; | 99.5% |
methanol
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
O-benzyltyrosine methyl ester
Conditions | Yield |
---|---|
With thionyl chloride for 18h; | 100% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
(S)-N-((R)-1,2,3,4-tetrahydronaphthalen-1-yl)-1,2,3,4-tetrahydroisoquinoline-3-carboxamide
tert-butyl ((S)-3-(4-(benzyloxy)phenyl)-1-oxo-1-((S)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)propan-2-yl)carbamate
Conditions | Yield |
---|---|
Stage #1: O-benzyl-N-tert-butoxycarbonyl-L-tyrosine With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 0 - 20℃; for 0.166667h; Inert atmosphere; Stage #2: (S)-N-((R)-1,2,3,4-tetrahydronaphthalen-1-yl)-1,2,3,4-tetrahydroisoquinoline-3-carboxamide With 4-methyl-morpholine In N,N-dimethyl-formamide at 0 - 20℃; for 2h; Inert atmosphere; | 100% |
methanol
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
methyl 2S-amino-3-(4-benzyloxyphenyl)propionate hydrochloride
Conditions | Yield |
---|---|
With thionyl chloride for 3h; Heating; | 100% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
methyl iodide
N-(tert-butyloxycarbonyl)-N-methyl-O-(phenylmethyl)-L-tyrosine
Conditions | Yield |
---|---|
With sodium hydride In tetrahydrofuran; paraffin a) 0 deg C, 1 h, b) 25 deg C, 16 h; | 99% |
Stage #1: O-benzyl-N-tert-butoxycarbonyl-L-tyrosine With sodium hydride In tetrahydrofuran; mineral oil at 0℃; Stage #2: methyl iodide In tetrahydrofuran; mineral oil at 20℃; for 24h; | 98% |
With sodium hydride In tetrahydrofuran at 20℃; for 24h; Inert atmosphere; Cooling with ice; | 98% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
N,O-dimethylhydroxylamine*hydrochloride
tert-butyl (S)-{3-[4-(benzyloxy)phenyl]-1-[methoxy(methyl)amino]-1-oxo-propan-2-yl}carbamate
Conditions | Yield |
---|---|
Stage #1: O-benzyl-N-tert-butoxycarbonyl-L-tyrosine With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0℃; for 0.25h; Inert atmosphere; Stage #2: N,O-dimethylhydroxylamine*hydrochloride With 4-methyl-morpholine In dichloromethane at 25℃; for 14h; Inert atmosphere; | 99% |
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; | 90% |
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In dichloromethane | 87% |
With TEA; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate In N,N-dimethyl-formamide at 0℃; Acylation; |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
O-benzyl N-Boc-L-tyrosinol
Conditions | Yield |
---|---|
With borane-THF In tetrahydrofuran at 0 - 20℃; for 4.33333h; Inert atmosphere; | 99% |
With diborane at -10 - 25℃; for 6h; Inert atmosphere; | 80% |
Stage #1: O-benzyl-N-tert-butoxycarbonyl-L-tyrosine With 4-methyl-morpholine; isobutyl chloroformate In tetrahydrofuran at -10℃; Stage #2: With sodium tetrahydroborate In tetrahydrofuran |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
N-trichloroacetoxyphthalimide
Conditions | Yield |
---|---|
With pyridine In acetonitrile at 22 - 23℃; for 12h; further solvents; | 98% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran | 98% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 0 - 20℃; | 97.65% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
N-Methyl-N-phenethylamine
N-[Boc-(O-benzyl)-L-tyrosyl]-N-methyl-2-phenylethylamine
Conditions | Yield |
---|---|
97% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
(S)-S-methyl-S-phenylsulfoximine
Conditions | Yield |
---|---|
With dmap; benzotriazol-1-ol; dicyclohexyl-carbodiimide In dichloromethane at 0 - 25℃; for 13h; | 97% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
N8-(4-amino-1-methylpentyl)-2-tert-butyl-6-methoxy-8-quinolinamine
(S)-(2-(4-benzyloxyphenyl)-1-[4-(2-tert-butyl-6-methoxy-8-quinolylamino)pentylcarbamoyl]ethyl)carbamic acid tert-butyl ester
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 6h; | 97% |
Conditions | Yield |
---|---|
With 4-(dimethylamino)pyridinium tosylate; diisopropyl-carbodiimide In dichloromethane at 0℃; Inert atmosphere; | 97% |
N-tert-butoxycarbonyl-L-phenylalanine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Boc-(S)-Lys(2-Cl-Z)-OH
3-<(4-methylbenzyl)thio>propionic acid
Conditions | Yield |
---|---|
Multistep reaction; | 96.6% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
L-proline methyl ester monohydrochloride
N-t-butoxycarbonyl-(S)-O-benzyltyrosyl-(S)-proline methyl ester
Conditions | Yield |
---|---|
With triethylamine; dicyclohexyl-carbodiimide In chloroform at 0℃; | 96% |
With benzotriazol-1-ol; dicyclohexyl-carbodiimide |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Boc-Tyr(Bzl)-Thr(Bzl)-Pro-Lys(Pipoc)-Ala-OPic
Conditions | Yield |
---|---|
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Boc-Tyr(Bzl)-NH2
Conditions | Yield |
---|---|
With ammonium bicarbonate; N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline In chloroform Ambient temperature; | 96% |
With pyridine; di-tert-butyl dicarbonate; ammonium bicarbonate In 1,4-dioxane 4-16 h; | 76% |
Stage #1: O-benzyl-N-tert-butoxycarbonyl-L-tyrosine With 4-methyl-morpholine; isobutyl chloroformate In tetrahydrofuran at -15℃; for 0.25h; Stage #2: With ammonium hydroxide In tetrahydrofuran |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine In dichloromethane at 20℃; | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine In dichloromethane at 20℃; for 2h; | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine In dichloromethane at 20℃; | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
methyl 2S-amino-3-(4-benzyloxyphenyl)propionate hydrochloride
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; 1,1'-carbonyldiimidazole In tetrahydrofuran | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
benzoic acid hydrazide
[2-(N'-benzoyl-hydrazino)-1-(4-benzyloxy-benzyl)-2-oxo-ethyl]-carbamic acid tert-butyl ester
Conditions | Yield |
---|---|
With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; | 96% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine In dichloromethane at 20℃; for 3h; | 95% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
Tyr(MPM)-OMe
Boc-Tyr(Bn)-Tyr(MPM)-OMe
Conditions | Yield |
---|---|
With diphenylphosphoranyl azide In N,N-dimethyl-formamide at 20℃; for 12h; | 95% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
1-amino-1-cyclopropanecarbonitrile hydrochloride
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 22℃; Inert atmosphere; | 95% |
1-(tert-butoxycarbonyl)-L-proline
N-tert-butoxycarbonyl-L-leucine
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
3-<(4-methylbenzyl)thio>propionic acid
Conditions | Yield |
---|---|
Multistep reaction; | 94.7% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
glycine ethyl ester hydrochloride
BOC-Tyr(OBzl)-Gly-OEt
Conditions | Yield |
---|---|
With O-Benzotriazol-1-yl-N,N,N',N'-bis(tetramethylene)uronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.25h; Ambient temperature; | 94.5% |
With pentafluorophenyl diphenyl-phosphinate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 1.5h; Ambient temperature; | 94% |
With N-ethylmorpholine;; benzotriazol-1-ol; dicyclohexyl-carbodiimide In 1,4-dioxane 1.) -10 deg C, 0.5 h, 2.) room temperature, 16 h; | 93% |
O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
glycyl glycine ethyl ester hydrochloride
Boc-Tyr(OBzl)-Gly-Gly-OEt
Conditions | Yield |
---|---|
With N-ethylmorpholine;; benzotriazol-1-ol; dicyclohexyl-carbodiimide In 1,4-dioxane 1.) -10 deg C, 0.5 h, 2.) room temperature, 16 h; | 94% |
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