Asymmetric Michael addition of thiols to (1R,2R,4R)-(−)-2,10-N-enoylcamphorsultam
摘要:
Lithium base promoted stereoselective Michael addition of thiols to N-methacryloylcamphorsultam produced the corresponding addition products in 66% to 90% diastereoselectivity. Hydrolysis of the Michael product with three equivalents of lithium hydroxide in THF/H2O gave the corresponding optically active beta-thioester with no sign of any racemization, and recovered camphorsultam quantitatively.
Asymmetric Michael addition of thiols to (1R,2R,4R)-(−)-2,10-N-enoylcamphorsultam
摘要:
Lithium base promoted stereoselective Michael addition of thiols to N-methacryloylcamphorsultam produced the corresponding addition products in 66% to 90% diastereoselectivity. Hydrolysis of the Michael product with three equivalents of lithium hydroxide in THF/H2O gave the corresponding optically active beta-thioester with no sign of any racemization, and recovered camphorsultam quantitatively.
COMPOUNDS AND METHODS OF TREATING OCULAR DISORDERS
申请人:Palczewski Krzysztof
公开号:US20120295895A1
公开(公告)日:2012-11-22
A method of treating an ocular disorder in a subject associated with aberrant all-trans-retinal clearance in the retina, the method comprising administering to the subject a therapeutically effective amount of a primary amine compound of formula:
wherein R
1
is an aliphatic and/or aromatic compound.
US8722669B2
申请人:——
公开号:US8722669B2
公开(公告)日:2014-05-13
Asymmetric Michael addition of thiols to (1R,2R,4R)-(−)-2,10-N-enoylcamphorsultam
作者:Wen-Jiuan Tsai、Yi-Tsong Lin、Biing-Jiun Uang
DOI:10.1016/0957-4166(94)80155-x
日期:1994.7
Lithium base promoted stereoselective Michael addition of thiols to N-methacryloylcamphorsultam produced the corresponding addition products in 66% to 90% diastereoselectivity. Hydrolysis of the Michael product with three equivalents of lithium hydroxide in THF/H2O gave the corresponding optically active beta-thioester with no sign of any racemization, and recovered camphorsultam quantitatively.