Enantioselective route to .gamma.-butyrolactones: chiral auxiliary mediated amide alkylation and iodolactonization
摘要:
A number of chiral, gamma, delta-unsaturated amides (1 and 2) have been prepared and their subsequent alkylation and iodolactonization to gamma-butyrolactones (3) investigated.
Sonic Hedgehog modulators and methods of use thereof are provided for.
本发明提供了用于调节刺猬Sonic(Sonic Hedgehog)的修饰剂及其使用方法。
Preparation of Nonracemic 3,5-Disubstituted-.gamma.-butyrolactones: An Effective Sequent Auxiliary for Amide Alkylation and Iodolactonization
作者:Hongsik Moon、Shawn W. E. Eisenberg、Mark E. Wilson、Neil E. Schore、Mark J. Kurth
DOI:10.1021/jo00101a002
日期:1994.11
The effective dual use of a chiral auxiliary in two sequential steps is reported; this sequent auxiliary mediates diastereoselective C-C bond formation in the first step and mediates diastereoselective heterocyclization in the second step.
EVANS, DAVID A.;DOW, ROBERT L.;SHIH, THOMAS L.;TAKACS, JAMES M.;ZAHLER, R+, J. AMER. CHEM. SOC., 112,(1990) N3, C. 5290-5313
作者:EVANS, DAVID A.、DOW, ROBERT L.、SHIH, THOMAS L.、TAKACS, JAMES M.、ZAHLER, R+
DOI:——
日期:——
NAJDI, SAMIR;REICHLIN, DANIEL;KURTH, MARK J., J. ORG. CHEM., 55,(1990) N6, C. 6241-6244