Unusual asymmetric oxidation of sulfide; the diastereoselective oxidation of prochiral sulfide-chiral acid salt with hydrogen peroxide without metal
摘要:
The sulfide 4 was treated with chiral acid in a mixture of toluene and methyl iso-butylketone to precipitate the salt, which reacted with 30% H2O2 for 3 weeks at rt. The resulting crystals were collected followed by recrystallization to give the salt of enantiometrically pure sulfoxide and chiral acid 7 in 72% yield and 98.1% de, which was led to chiral sulfoxide S-3 after neutralization. Sulfoxide S-3 was led to S-1a as the candidate for an orally active HIV-1 therapeutic agent. (c) 2005 Elsevier Ltd. All rights reserved.
环保法规推动新的更安全,毒性较低的生物基溶剂的查找替换争议的高沸点溶剂,如ñ甲基-2-吡咯烷酮和ñ,ñ在化工行业二甲基甲酰胺。最近,N-烷基-2-吡咯烷酮和5-甲基-N-烷基-2-吡咯烷酮被提议作为许多应用的有吸引力的替代溶剂。在这里,我们报告了一种基于生物的两步化学催化系统,该系统可以从谷氨酸和C 3 -C 5羰基化合物开始合成范围广泛的N-烷基-2-吡咯烷酮。第一步N通过温和且有效的Pd催化的还原性N-烷基化以高产率(> 85%)合成了谷氨酸的α-单烷基化衍生物。随后,在惰性气氛下在250℃下热诱导内酰胺化成相应的N-烷基焦谷氨酸,然后Pd催化脱羧,得到N-烷基-2-吡咯烷酮。通过用碱中和N-烷基焦谷氨酸底物,部分抵消了水解降解,导致产率高达82%。最后,两个反应步骤在相同的Pd / Al 2 O 3催化剂下,在不同的气体气氛和温度条件下,通过一锅法成功地结合在一起。
Liver/plasma concentration ratio for dosing hepatitis C virus protease inhibitor
申请人:White E. Ronald
公开号:US20070021351A1
公开(公告)日:2007-01-25
Compositions and therapeutic combinations are provided including at least one compound selected from the group consisting of compounds of Formulae I to XXVI as defined herein as well as methods of treatment, prevention or amelioration of one or more symptoms of hepatitis C, treating disorders associated with HCV virus, modulating activity of HCV protease, in which liver to plasma concentration ratio of the compound ranges from about 2:1 to about 10:1.
Pharmaceutical formulations and methods of treatment using the same
申请人:Malcolm A. Bruce
公开号:US20070010431A1
公开(公告)日:2007-01-11
Pharmaceutical formulations containing at least one compound of Formulae I-XXVI herein and at least one surfactant. Pharmaceutically acceptable carriers and excipients may also be included in the formulations. The formulations of the present invention are suited for use in single unit dosages.
[EN] NOVEL KETOAMIDES WITH CYCLIC P4'S AS INHIBITORS OF NS3 SERINE PROTEASE OF HEPATITIS C VIRUS<br/>[FR] NOUVEAUX CETOAMIDES A P4 CYCLIQUES EN TANT QU'INHIBITEURS DE LA NS3 SERINE PROTEASE DU VIRUS DE L'HEPATITE C
申请人:SCHERING CORP
公开号:WO2005085242A1
公开(公告)日:2005-09-15
The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
The present invention provides methods for inhibiting protein kinases selected from the group consisting of AKT, Checkpoint kinase, Aurora kinase, Pim kinases, and tyrosine kinase using pyrazolo[1,5-a]pyrimidine compounds and methods of treatment, prevention, inhibition, or amelioration of one or more diseases associated with protein kinases using such compounds.