An infrared study of the stereochemistry attending the Claisen rearrangement of cis- and trans-alpha,gamma-dimethylallyl and two other related vinyl ethers has shown that the reaction produces essentially only trans substituted allylacetaidehydes. The double bond in the o-Claisen rearrangement product of trans-alpha, gamma-dimethylallyl phenyl ether has also been demonstrated by infrared absorption to be predominantly trans. The transition state geometry of the Claisen rearrangement implied by these findings is discussed.
MODULATORS OF SESTRIN-GATOR2 INTERACTION AND USES THEREOF
申请人:Navitor Pharmaceuticals, Inc.
公开号:US20170114080A1
公开(公告)日:2017-04-27
The present invention provides compounds, compositions thereof, and methods of using the same.
本发明提供了化合物、其组合物以及使用相同的方法。
LUPEOL-TYPE TRITERPENE DERIVATIVES AS ANTIVIRALS
申请人:PARTHASARADHI REDDY Bandi
公开号:US20110015196A1
公开(公告)日:2011-01-20
The invention relates to novel lupeol-type triterpene derivatives and related compounds, and pharmaceutical compositions useful for therapeutic treatment of viral diseases and particularly HIV mediated diseases.
A direct route to six and seven membered lactones <i>via</i> γ-C(sp<sup>3</sup>)–H activation: a simple protocol to build molecular complexity
作者:Jayabrata Das、Pravas Dolui、Wajid Ali、Jyoti Prasad Biswas、Hediyala B. Chandrashekar、Gaurav Prakash、Debabrata Maiti
DOI:10.1039/d0sc03144e
日期:——
Lactones comprise a class of valuable compounds having biological as well as industrial importance. Development of a methodology to synthesize such molecules directly from readily available materials such as aliphatic carboxylic acid is highly desirable. Herein, we have reported synthesis of δ-lactones and ε-lactones via selective γ-C(sp3)–H activation. The γ-C–H bondcontaining aliphatic carboxylic
Stereoselective process for producing nitro compounds
申请人:Abbott Laboratories
公开号:US06329536B1
公开(公告)日:2001-12-11
The present invention relates to producing stereoselective nitro compounds by reacting a dicarbonyl compound with a nitrostyrene compound in the presence of a catalyst complex and a base.