Reduction of tertiaryphosphineoxides and sulfides into the corresponding phosphines with amine-assisted aluminum hydrides has been studied. The method is characterized by mild conditions, short reaction time, high efficiency, and expanded substrate scope. The new method is an alternative to the currently used methods of reducing phosphineoxides or recycling phosphines engaged in organic reactions
The present invention discloses a class of pyrrolidine derivatives as PPAR agonist, and their use for the treatment of some diseases of PPAR receptor-associated pathways (such as nonalcoholic steatohepatitis and concurrent fibrosis, insulin resistance, primary biliary cholgangitis, dyslipidenmia, hyperlipidemia, hypercholesterolemia, atherosclerosis, hypertriglyceridemia, cardiovascular disease, obesity or the like). In particular, the present invention discloses a compound represented by Formula (I) or a pharmaceutically acceptable salt thereof.
Organocatalyzed Reduction of Tertiary Phosphine Oxides
作者:Marie-Luis Schirmer、Stefan Jopp、Jens Holz、Anke Spannenberg、Thomas Werner
DOI:10.1002/adsc.201500762
日期:2016.1.7
A novel selective catalytic reduction method of tertiaryphosphineoxides to the corresponding phosphines has been developed. Notably, the reaction proceeds smoothly with low catalyst loadings of 1–5 mol% even at low temperature (70 °C). Under the optimized conditions various phosphineoxides could be selectively reduced and the desired phosphines were usually obtained in excellent yields above 90%
NOVEL COMPOUND, AND FLAVOR AND/OR FRAGRANCE COMPOSITION CONTAINING SAID COMPOUND
申请人:TAKASAGO INTERNATIONAL CORPORATION
公开号:US20170029358A1
公开(公告)日:2017-02-02
The present invention provides a compound represented by general formula (1).
(In the formula, R
1
represents an alkyl group having 2 to 9 carbon atoms, an alkenyl group having 2 to 9 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or a phenyl group which may have a substituent; R
2
represents an alkyl group having 1 to 3 carbon atoms; R
3
to R
5
independently represent a hydrogen atom, or an alkyl group having 1 to 3 carbon atoms; R
6
represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or an alkoxy group having 1 to 5 carbon atoms; n represents 0 or 1; and the wavy line represents a cis form, a trans form or a mixture of a cis form and a trans form.)