Breaking of the C−C Bond of Cyclobutanones by Rhodium(I) and Its Extension to Catalytic Synthetic Reactions
作者:Masahiro Murakami、Hideki Amii、Kunji Shigeto、Yoshihiko Ito
DOI:10.1021/ja9604525
日期:1996.1.1
complex. When a cyclobutanone bearing a hydrogen atom at the 3-position was used, appropriate choice of the catalyst system led to the selective formation of either a cyclopropane or an alkene. Breaking of the carbon−carbon bond was next combined with hydrogenolysis. When cyclobutanone was treated under hydrogen pressure with a catalytic amount of a rhodium(I) complex having a bidentate diphos...
描述了铑 (I) 催化合成转化的研究,包括选择性断裂 C-C 键 α 到环丁酮的羰基。用等摩尔量的 (Ph3P)3RhCl 在甲苯中回流处理环丁酮时发生脱羰,得到相应的环丙烷。环丙烷的形成表明,Rh(I) 在初始步骤中插入了羰基碳和 α-碳之间的键。还实现了环丁酮的催化脱羰。反应的模式和速率很大程度上取决于铑(I)配合物的配体。When a cyclobutanone bearing a hydrogen atom at the 3-position was used, appropriate choice of the catalyst system led to the selective formation of either a cyclopropane or an alkene. 碳-碳键的断裂接下来与氢解结合。当环丁酮在氢气压力下用催化量的具有双齿双膦的铑(I)配合物处理时..
Opsin-Binding Ligands, Compositions and Methods of Use
申请人:Bikam Pharmaceuticals, Inc.
公开号:US20150038574A1
公开(公告)日:2015-02-05
Compounds and compositions are disclosed that are useful for treating ophthalmic conditions caused by or related to production of toxic visual cycle products that accumulate in the eye, such as dry adult macular degeneration, as well as conditions caused by or related to the misfolding of mutant opsin proteins and/or the mis-localization of opsin proteins. Compositions of these compounds alone or in combination with other therapeutic agents are also described, along with therapeutic methods of using such compounds and/or compositions. Methods of synthesizing such agents are also disclosed.
Opsin-binding ligands, compositions and methods of use
申请人:Bikam Pharmaceuticals, Inc.
公开号:US10040749B2
公开(公告)日:2018-08-07
Compounds and compositions are disclosed that are useful for treating ophthalmic conditions caused by or related to production of toxic visual cycle products that accumulate in the eye, such as dry adult macular degeneration, as well as conditions caused by or related to the misfolding of mutant opsin proteins and/or the mis-localization of opsin proteins. Compositions of these compounds alone or in combination with other therapeutic agents are also described, along with therapeutic methods of using such compounds and/or compositions. Methods of synthesizing such agents are also disclosed.