[3+2] Cycloaddition of Alkynyl Boronates and <i>in situ</i> Generated Azomethine Ylide
作者:Oleksandr S. Liashuk、Ihor A. Ryzhov、Oleksandr V. Hryshchuk、Yulian M. Volovenko、Oleksandr O. Grygorenko
DOI:10.1002/chem.202303504
日期:2024.2.21
[3+2] cycloaddition of alkynyl boronates and in situ generated azomethineylide is used for the selective scalable synthesis of pyrroline- and diazabicyclo[3.3.0]octane-derived boronates (i. e., 1 : 1 and 1 : 2 cycloadducts). The C−C and C−heteroatom bond-forming reactions of the obtained building blocks illustrate their utility for organic synthesis and drug discovery.
RIFAMYCIN DERIVATIVES FOR TREATING MICROBIAL INFECTIONS
申请人:Cumbre Pharmaceuticals Inc.
公开号:EP1781670A1
公开(公告)日:2007-05-09
US7229996B2
申请人:——
公开号:US7229996B2
公开(公告)日:2007-06-12
[EN] RIFAMYCIN DERIVATIVES FOR TREATING MICROBIAL INFECTIONS<br/>[FR] DERIVES DE RIFAMYCINE POUR TRAITER DES INFECTIONS MICROBIENNES
申请人:CUMBRE INC
公开号:WO2006012470A1
公开(公告)日:2006-02-02
Novel rifamycin derivatives of formula (I) (both hydroquinone and corresponding quinone (C1-C4) forms), or their salts, hydrates or prodrugs thereof, wherein: a preferred R comprises hydrogen, acetyl; L is a linker, a preferred linker group elements selected from any combination of 1 to 5 groups shown, provided L is not formula (A), wherein R1 is H, methyl or alkyl. The inventive compounds exhibit valuable antibiotic properties. Formulations having these compounds can be used in the control or prevention of infectious diseases in mammals, both humans and non-humans. In particular, the compounds exhibit a pronounced antibacterial activity, even against multiresistant strains of microbes.
Rifamycin derivatives
申请人:Ma Zhenkun
公开号:US20060019985A1
公开(公告)日:2006-01-26
Novel rifamycin derivatives of formula I (both hydroquinone and corresponding quinone (C
1
-C
4
) forms):
or their salts, hydrates or prodrugs thereof,
wherein: a preferred R comprises hydrogen, acetyl; L is a linker, a preferred linker group elements selected from any combination of 1 to 5 groups shown FIG.
1
, provided L is not
wherein R
1
is H, methyl or alkyl. The inventive compounds exhibit valuable antibiotic properties. Formulations having these compounds can be used in the control or prevention of infectious diseases in mammals, both humans and non-humans. In particular, the compounds exhibit a pronounced antibacterial activity, even against multiresistant strains of microbes.