Selective desulfurization of 2-alkyl-1,3-dithianes, -oxathiolanes, or -thiazolidines 1 with one equivalent of tri-n-butyltin hydride yields acyclic compounds R1R2CHX(CH2)nSSnBu3 (X = S,O,NH; n= 2,3), (2) which can be destannylated to the corresponding mercaptans 3.
用一当量的氢化三正丁基锡对2-烷基-1,3-二硫杂环丁烷,-氧杂硫杂环戊烷或-噻唑烷1进行选择性脱硫,得到无环化合物R 1 R 2 CHX(CH 2)n SSnBu 3(X = S, O,NH; n = 2,3),(2),其可被脱甲锡化为相应的硫醇3。
Triazole derivative or salt thereof
申请人:SS Pharmaceutical Co., Ltd.
公开号:US06063945A1
公开(公告)日:2000-05-16
A compound having formula (2): ##STR1## wherein R represents hydrogen, a straight or branched C.sub.1-10 alkyl group, a C.sub.7-11 aralkyl group or a C.sub.2-10 carboacyl group and m stands for 1 to 5.
The present invention relates to pyrazinone derivatives of formula (I):
wherein R1, R2, R3, R4, R5, R6 and R7 are as herein defined; processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
The present invention relates to pyrazinone derivatives of formula (I):
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
and R
7
are as herein defined; processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
N-cyclopropyl-3-fluoro-5-[3-[[1-[2-[2- [(2-hydroxethyl)amino] ethoxy]phenyl] cyclopropyl] amino]-2-oxo-1 (2H)-pyrazinyl]-4-methyl-benzamide, or pharmaceutically acceptable salts thereof and their uses
申请人:AstraZeneca AB
公开号:US08299246B2
公开(公告)日:2012-10-30
The present invention relates to pyrazinone derivatives of formula (I):
wherein R1, R2, R3, R4, R5, R6 and R7 are as herein defined; processes for their preparation, pharmaceutical compositions containing them and their use in therapy.