29886-19-9Relevant articles and documents
Acetylation of nucleosides and acetyl migration.
Johnston
, p. 6987 - 6993 (1968)
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Synthesis and enzymic hydrolysis of acylated adenosine derivatives
Car,Petrovic,Tomic
, p. 713 - 723 (2006)
Various derivatives of adenosine were prepared by acylation of adenosine (6-amino-9-(β-D-ribofuranosyl)purine (1) with different molar equivalents of acetic anhydride and/or pivaloyl chloride in pyridine. Compounds 6-acetylamino-9-[(2,3,5-tri-O-acetyl)-β-D-ribofuranosyl]purine (3), 6-amino-9-[(2,3,5-tri-O-acetyl)-β-D-ribofuranosyl]purine (4), and 6-pivaloylamino-9-[(2,3,5-tri-O-pivaloyl)-β-D-ribofuranosyl]purine (5) were subsequently submitted to hydrolysis catalyzed by a number of hydrolytic enzymes. Regioselective enzymic deacetylation at the primary hydroxyl group of 3 and 4 with butyrylcholinesterase (BChE) produced 6-acetylamino-9-[(2,3-di-O- acetyl)-β-D-ribofuranosyl]purine (9) and 6-amino-9-[(2,3-di-O-acetyl- β-D-ribofuranosyl]purine (10), respectively. All structures were established by 1H and 13C NMR spectroscopies.
Discovery of Leucyladenylate Sulfamates as Novel Leucyl-tRNA Synthetase (LRS)-Targeted Mammalian Target of Rapamycin Complex 1 (mTORC1) Inhibitors
Yoon, Suyoung,Kim, Jong Hyun,Kim, Sung-Eun,Kim, Changhoon,Tran, Phuong-Thao,Ann, Jihyae,Koh, Yura,Jang, Jayun,Kim, Sungmin,Moon, Hee-Sun,Kim, Won Kyung,Lee, Sangkook,Lee, Jiyoun,Kim, Sunghoon,Lee, Jeewoo
, p. 10322 - 10328 (2016/12/07)
Recent studies indicate that LRS may act as a leucine sensor for the mTORC1 pathway, potentially providing an alternative strategy to overcome rapamycin resistance in cancer treatments. In this study, we developed leucyladenylate sulfamate derivatives as LRS-targeted mTORC1 inhibitors. Compound 18 selectively inhibited LRS-mediated mTORC1 activation and exerted specific cytotoxicity against colon cancer cells with a hyperactive mTORC1, suggesting that 18 may offer a novel treatment option for human colorectal cancer.
Stereoselective formation of a P-P bond in the reaction of 2-alkoxy-2-thio-1,3,2-oxathiaphospholanes with O,O-dialkyl H-phosphonates and H-thiophosphonates
Blaziak, Damian,Guga, Piotr,Jagiello, Agata,Korczynski, Dariusz,MacIaszek, Anna,Nowicka, Anna,Pietkiewicz, Aleksandra,Stec, Wojciech J.
supporting information; experimental part, p. 5505 - 5510 (2011/02/18)
A new method for the formation of organohypophosphates containing a P-P bond under mild conditions, based on the DBU-assisted reaction of 2-alkoxy-2-thio-1,3,2-oxathiaphospholanes with O,O-dialkyl H-phosphonates or H-thiophosphonates, has been elaborated. The resulting triesters of P 1-thio- and P1,P2-dithiohypophosphoric acids, respectively, having O-methyl or O-ethyl groups, can be selectively dealkylated to form the corresponding di- or monoesters. Appropriately protected 2′-deoxyguanosine-3′-O-(2-thio-1,3,2-oxathiaphospholane) was converted into the corresponding P1-thio- and P1,P 2-dithiohypophosphate esters in a highly stereoselective manner (98%+ and 90%+, respectively).