Nucleophilic 5-endo-trig cyclization of 2-(trifluoromethyl)allylic metal enolates and enamides: Synthesis of tetrahydrofurans and pyrrolidines bearing exo-difluoromethylene units
作者:Takeshi Fujita、Masahiro Hattori、Masaaki Matsuda、Ryutaro Morioka、Tanner C. Jankins、Masahiro Ikeda、Junji Ichikawa
DOI:10.1016/j.tet.2018.11.011
日期:2019.1
proceeded exclusively in each case to afford the corresponding five-membered heterocycles with both exo-difluoromethylene and exo-alkylidene units. On treatment with potassium hexamethyldisilazide (KHMDS) or lithium diisopropylamide (LDA), 2-(trifluoromethyl)allylic ketones or imines provided the corresponding tetrahydrofurans or pyrrolidines bearing a Z-alkylidene group with perfect or substantial stereoselectivity
The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.
本发明提供了化合物、药学上可接受的组合物以及使用它们的方法。
HCV PROTEASE INHIBITORS AND USES THEREOF
申请人:Niu Deqiang
公开号:US20090176858A1
公开(公告)日:2009-07-09
The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.
本发明提供了化合物、药学上可接受的组合物以及使用它们的方法。
ALGORITHM FOR DESIGNING IRREVERSIBLE INHIBITORS
申请人:Singh Juswinder
公开号:US20100185419A1
公开(公告)日:2010-07-22
The invention is an algorithm and method for designing an inhibitor that covalently binds a target polypeptide. The algorithm and method can be used to rapidly and efficiently convert reversible inhibitors into irreversible inhibitors.
CONJUGATES COMPRISING HYDROXYALKYL STARCH AND A CYTOTOXIC AGENT AND PROCESS FOR THEIR PREPARATION
申请人:Fresenius Kabi Deutschland GmbH
公开号:US20150297738A1
公开(公告)日:2015-10-22
The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS′(-L-M)
n
wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS′ is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.