Ni-Catalyzed α-Alkylation of Unactivated Amides and Esters with Alcohols by Hydrogen Auto-Transfer Strategy
作者:Siba P. Midya、Jagannath Rana、Jayaraman Pitchaimani、Avanashiappan Nandakumar、Vedichi Madhu、Ekambaram Balaraman
DOI:10.1002/cssc.201801443
日期:2018.11.23
A transition‐metal‐catalyzedborrowinghydrogen/hydrogen auto‐transfer strategy allows the utilization of feedstock alcohols as an alkylating partner, which avoids the formation of stoichiometric salt waste and enables a direct and benign approach for the construction of C‐N and C−C bonds. In this study, a nickel‐catalyzedα‐alkylation of unactivated amides and ester (tert‐butyl acetate) is carried
An orally administrable antibacterial agent which contains as an active ingredient a carbapenem compound represented by the formula [1] below,
wherein R
0
represents hydrogen atom or the like; R
1
represents C
1
-C
3
alkyl substituted by hydroxyl group or the like; R represents hydrogen atom or a group which regenerates a carboxyl group by hydrolysis in a living body; L represents a single bond, methylene, —OCH
2
(CO)— or the like; and Het represents a group represented by the following formula [2],
wherein m and n independently represent 0 or 1; A and B independently represent methylene, carbonyl or the like; Y represents methylene, ethylene, oxygen atom, —OCH
2
—, —NR
a
CH
2
— (wherein R
a
represents hydrogen atom, optionally substituted C
1
-C
4
alkyl group or the like) or the like.
Lincomycin Derivatives and Antimicrobial Agents Comprising the Same as Active Ingredient
申请人:Umemura Eijirou
公开号:US20090156512A1
公开(公告)日:2009-06-18
This invention provides compounds of formula (I) or its pharmacologically acceptable salt or solvate, wherein A represents aryl or a monocyclic or bicyclic heterocyclic group, R
1
represents a halide, nitro, substituted C
1-6
alkyl, optionally substituted amino, C
1-6
alkyloxycarbonyl, optionally substituted aryl, a heterocyclic group, or heterocyclic carbonyl, R
2
represents a hydrogen atom or C
1-6
alkyl, R
3
represents C
1-6
alkyl, all of R
4
, R
5
, and R
6
represent a hydrogen atom, R
7
represents C
1-6
alkyl, m is 1 or 2, and n is 1. The compounds are novel lincomycin derivatives having a potent activity against resistant pneumococci. The compounds can be used as an antimicrobial agent and are useful for preventing or treating bacterial infectious diseases.
An orally administrable antibacterial agent which contains as an active ingredient a carbapenem compound represented by the formula [1] below,
wherein R0 represents hydrogen atom or the like; R1 represents C1-C3 alkyl substituted by hydroxyl group or the like; R represents hydrogen atom or a group which regenerates a carboxyl group by hydrolysis in a living body; L represents a single bond, methylene, -OCH2(CO)- or the like; and Het represents a group represented by the following formula [2],
wherein m and n independently represent 0 or 1; A and B independently represent methylene, carbonyl or the like; Y represents methylene, ethylene, oxygen atom, -OCH2-, -NRaCH2- (wherein Ra represents hydrogen atom, optionally substituted C1-C4 alkyl group or the like) or the like.
一种可口服的抗菌剂,其活性成分是由下式[1]代表的碳青霉烯类化合物、
其中 R0 代表氢原子或类似物;R1 代表被羟基或类似物取代的 C1-C3 烷基;R 代表氢原子或在活体内通过水解再生羧基的基团;L 代表单键、亚甲基、-OCH2(CO)- 或类似物;Het 代表下式[2]所代表的基团、
其中 m 和 n 独立地代表 0 或 1;A 和 B 独立地代表亚甲基、羰基或类似物;Y 代表亚甲基、乙烯、氧原子、-OCH2-、-NRaCH2-(其中 Ra 代表氢原子、任选取代的 C1-C4 烷基或类似物)或类似物。