What is described is a compound of formula I
consisting of a compound in which R
1
is a branched chain alkyl consisting of 10 to 31 carbons; R
2
is a linear alkyl, alkenyl, or alkynyl consisting of 2 to 20 carbons; L
1
and L
2
are the same or different, each a linear alkylene of 1 to 20 carbons or a linear alkenylene of 2 to 20 carbons; X
1
is S or O; R
3
is a linear or branched alkylene consisting of 1 to 6 carbons; and R
4
and R
5
are the same or different, each a hydrogen or a linear or branched alkyl consisting of 1 to 6 carbons; or a pharmaceutically acceptable salt thereof.
[EN] ASPARAGINE DERIVATIVES AND METHODS OF USING SAME<br/>[FR] DÉRIVÉS D'ASPARAGINE ET LEURS PROCÉDÉS D'UTILISATION
申请人:SENDA BIOSCIENCES INC
公开号:WO2021252640A1
公开(公告)日:2021-12-16
The present disclosure relates to compounds of formulas (A) and (I), pharmaceutically acceptable salts thereof, and solvates of any of the foregoing, pharmaceutical compositions comprising the same, methods of preparing the same, intermediate compounds useful for preparing the same, and methods for treating or prophylaxis of diseases, in particular cancer, such as colorectal cancer, using the same.
Reduction of Weinreb amides to aldehydes under ambient conditions with magnesium borohydride reagents
作者:Christopher L. Bailey、Jacob W. Clary、Chittreeya Tansakul、Lucas Klabunde、Christopher L. Anderson、Alexander Y. Joh、Alexander T. Lill、Natalie Peer、Rebecca Braslau、Bakthan Singaram
DOI:10.1016/j.tetlet.2014.12.066
日期:2015.1
[H3BNMe2]−, MgAB) is an analogue of the versatile lithium dialkylaminoborohydrides (LAB reagents), prepared by the reaction of dimethylamine-borane with methylmagnesium chloride. MgAB is a partial reducing agent for Weinrebamides under ambient conditions and is complementary to the commonly utilized lithium aluminum hydride (LiAlH4) and diisobutylaluminum hydride (DIBAL) reagents, while exhibiting enhanced
Synthesis of Difluoromethyl Ketones from Weinreb Amides, and Tandem Addition/Cyclization of <i>o</i>
-Alkynylaryl Weinreb Amides
作者:Jongkonporn Phetcharawetch、Nolan M. Betterley、Darunee Soorukram、Manat Pohmakotr、Vichai Reutrakul、Chutima Kuhakarn
DOI:10.1002/ejoc.201701322
日期:2017.12.15
[Difluoro(phenylsulfanyl)methyl]trimethylsilane (PhSCF2SiMe3) underwent a fluoride-induced nucleophilic addition to the carbonyl group of Weinreb amides to provide the corresponding difluoro(phenylsulfanyl)methyl ketones. These were converted into difluoromethyl ketones through selective reductive cleavage of the phenylsulfanyl group. The reaction of o-alkynyl Weinreb amides derived from benzoic acid derivatives resulted
A Convenient One-Pot Method for the Synthesis of N-Methoxy-N-methyl Amides from Carboxylic Acids
作者:Joong-Gon Kim、Doo-Ok Jang
DOI:10.5012/bkcs.2010.31.01.171
日期:2010.1.20
reaction temperatures, low yields, multi-step reactions, or tedious work-up procedures.We report a mild and convenient one-pot method for the synthesis of Weinreb amides from carboxylic acids employing trichloroacetonitrile (TCA) and triphenylphosphine (TPP). We first presumed that carboxylic acid chlorides formed