Chemoenzymatic synthesis of glycosylated enantiomerically pure 4-pentene 1,2- and 1,3-diol derivatives
摘要:
1-Dimethylthexylsiloxy-2-chloroacetoxy-4 2 and 1-dimethylthexylsiloxy-3-chloroacetoxy-4-pentene 3 were saponified with Pseudomonas lipase to give (R)-1-dimethylthexylsiloxy-4-pentene-2-ol (ee=99%) and (S)-2 (ee=99%) and (S)-1-dimethylthexylsiloxy-4-pentene-3-ol (ee=99%) and (R)-3 (ee=98%), respectively. All enantiomers were chemically transformed into the corresponding enatiomerically pure 2-benzoyloxy-4-pentene-1-ols 8 and 3-benzoyloxy-4-pentene-1-ols 14, respectively. Mannosylation of (R)-8 and (S)-14 with 2,3,4,6-tetra-O-benzoyl-a-D-mannopyranosyl trichloroacetimidate afforded the corresponding mannopyranosides. (C) 1998 Elsevier Science Ltd. All rights reserved.
[EN] COMPOUNDS AND METHODS FOR THE TREATMENT OR PREVENTION OF FLAVIVIRUS INFECTIONS<br/>[FR] COMPOSES ET PROCEDES DE TRAITEMENT OU DE PREVENTION D'INFECTIONS A FLAVIVIRUS
申请人:VIROCHEM PHARMA INC
公开号:WO2004052885A1
公开(公告)日:2004-06-24
The present invention provides novel compounds represented by formula (I) or pharmaceutically acceptable salts thereof useful for treating flaviviridae viral infection.
本发明提供了一种表示为式(I)的新化合物,或其在药学上可接受的盐,用于治疗黄病毒科病毒感染。
[EN] COMBINATIONS OF HEPATITIS C VIRUS INHIBITORS<br/>[FR] ASSOCIATIONS D'INHIBITEURS DU VIRUS DE L'HÉPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2015005901A1
公开(公告)日:2015-01-15
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
sulfide reacted with ethyl glyoxylate in the presence of tin(IV) chloride to give a tetrahydrofuran derivative. The presence of a bulky substituent on the sulfur atom was crucial to the present reaction. The reaction of allyl mesityl selenide also gave a cycloaddition product, whereas allylation occurred when allyl mesityl telluride was used.
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
Palladium-CatalyzedO-Allylation of α-Hydroxy Carbonyl Compounds
作者:Bernd Schmidt、Stefan Nave
DOI:10.1002/adsc.200505361
日期:2006.3
α-Hydroxy carbonyl compounds undergo smooth O-allylation using allylic carbonates and Pd(0) catalysts. This method has significant advantages over other O-allylation methods as it provides a solution to several problems previously observed for this synthetic transformation.