Mucochloric Acid: A Useful Synthon for the Selective Synthesis of 4-Aryl-3-chloro-2(5H)-furanones, (Z)-4-Aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones and 3,4-Diaryl-2(5H)-furanones
4-Dichloro-2(5H)-furanone, which has been prepared efficiently from mucochloricacid, has been transformed selectively into 4-aryl-3-chloro-2(5H)-furanones either by Suzuki- or Stille-type reactions. These monochloro derivatives have been used as precursors either to (Z)-4-aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones, including naturally occurring rubrolide M, or to unsymmetrical 3,4-diaryl-2(5H)-furanones
Total synthesis of rubrolide M and some of its unnatural congeners
作者:Fabio Bellina、Chiara Anselmi、Renzo Rossi
DOI:10.1016/s0040-4039(02)00202-2
日期:2002.3
Two protocols have been developed for the Pd-catalyzed regioselective synthesis of 4-aryl-3-chloro-2(5H)-furanones starting from 3,4-dichloro-2(5H)-furanone. These monochloro derivatives have then been used as precursors to (Z)-4-aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones including naturally-occurring rubrolide M.
2-Furancarboxylic acid hydrazides and pharmaceutical compositions containing the same
申请人:Fujii Akihito
公开号:US20050171196A1
公开(公告)日:2005-08-04
The present invention provides 2-furancarboxylic acid hydrazide compounds represented by General Formula (I) below, and prodrugs, physiologically acceptable salts, hydrates, solvates thereof, methods for producing them and pharmaceutical compositions containing them:
wherein A is a group represented by Formula (a) or the like:
(wherein either R
4
or R
5
represents cyano, nitro or the like, and the other represents a hydrogen atom or the like);
either R
1
or R
2
represents a group: -D-(X)m-R
6
or the like, and the other represents a group: -E-(Y)n-R
7
, hydrogen atom, aryl or the like;
R
3
is a hydrogen atom or the like; D and E independently represent aryl; X and Y independently represent O or the like;
R
6
and R
7
independently represent alkyl, aryl, arylalkyl or the like; and m and n are independently 0 or 1, provided that the aryl is optionally substituted. Such compounds exhibit a potent antagonistic activity on glucagon receptor and are of use as preventive and/or therapeutic agents for symptoms and diseases in which glucagon is involved.
2-furancarboxylic acid hydrazides and pharmaceutical compositions containing the same
申请人:Dainippon Pharmaceutical Co., Ltd
公开号:US07514452B2
公开(公告)日:2009-04-07
The present invention provides 2-furancarboxylic acid hydrazide compounds represented by General Formula (I) below, and prodrugs, physiologically acceptable salts, hydrates, solvates thereof:
wherein A is a group represented by Formula (a) or the like:
(wherein either R4 or R5 represents cyano, nitro or the like, and the other represents a hydrogen atom or the like); either R1 or R2 represents a group: -D-(X)m-R6 or the like, and the other represents a group: -E-(Y)n-R7, hydrogen atom, aryl or the like; R3 is a hydrogen atom or the like; D and E independently represent aryl; X and Y independently represent O or the like; R6 and R7 independently represent alkyl, aryl, arylalkyl or the like; and m and n are independently 0 or 1, provided that the aryl is optionally substituted.
2-FURANCARBOXYLIC ACID HYDRAZIDES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME
申请人:DAINIPPON PHARMACEUTICAL CO., LTD.
公开号:EP1489077A1
公开(公告)日:2004-12-22
The present invention provides 2-furancarboxylic acid hydrazide compounds represented by General Formula
(I) below, and prodrugs, physiologically acceptable salts, hydrates, solvates thereof, methods for producing them and pharmaceutical compositions containing them:
wherein A is a group represented by Formula (a) or the like:
(wherein either R4 or R5 represents cyano, nitro or the like, and the other represents a hydrogen atom or the like);
either R1 or R2 represents a group: -D-(X)m-R6 or the like, and the other represents a group: -E-(Y)n-R7, hydrogen atom, aryl or the like;
R3 is a hydrogen atom or the like;
D and E independently represent aryl;
X and Y independently represent 0 or the like;
R6 and R7 independently represent alkyl, aryl, arylalkyl or the like; and
m and n are independently 0 or 1, provided that the aryl is optionally substituted. Such compounds exhibit a potent antagonistic activity on glucagon receptor and are of use as preventive and/or therapeutic agents for symptoms and diseases in which glucagon is involved.
本发明提供由通式表示的 2-呋喃羧酸酰肼化合物
(I)代表的2-呋喃羧酸酰肼化合物及其原药、生理上可接受的盐、水合物、溶液,以及生产它们的方法和含有它们的药物组合物:
其中 A 是由式(a)代表的基团或类似基团:
(其中 R4 或 R5 代表氰基、硝基或类似物,另一个代表氢原子或类似物);
R1 或 R2 代表一个基团:-D-(X)m-R6 或类似基团,另一个代表一个基团:-E-(Y)n-R7、氢原子、芳基或类似基团;
R3 是氢原子或类似物;
D 和 E 各自代表芳基;
X 和 Y 独立地代表 0 或类似物;
R6 和 R7 独立地代表烷基、芳基、芳烷基或类似物;以及
m 和 n 独立地为 0 或 1,前提是芳基被任选取代。此类化合物对胰高血糖素受体具有强效的拮抗活性,可用作胰高血糖素相关症状和疾病的预防和/或治疗药物。