Stereospecific Hydrogenolysis of Benzylic Alcohols over Pd/C
作者:Freya M. Harvey、Christian G. Bochet
DOI:10.1021/acs.joc.0c00827
日期:2020.6.5
benzylic alcohols on palladium on carbon (Pd/C) generally proceeds with inversion of configuration. However, little is known about the hydrogenolysis mechanism of primary and secondary benzylic alcohols. Literature precedents suggest that these substrates may interact differently with the catalyst. To study the mechanism, we synthesized a pair of deuterated diastereoisomers with a chiral center at the
Base- and metal-free decarboxylative aldol reaction of β-ketoacids with glyoxylate hydrates and glyoxal monohydrates in water
作者:Nan Ren、Jing Nie、Jun-An Ma
DOI:10.1039/c6gc02705a
日期:——
An environmental benign decarboxylative aldol reaction of [small beta]-ketoacids with glyoxylate and glyoxalmonohydrates in water is reported. The reaction proceeds smoothly without any base and metal catalysts, affording the correspoding...
The invention provides a compound or its pharmaceutically-acceptable salt of formula
wherein A
1
is a hydrogen, etc.; j and k are 0 or 1;
is a double bond, etc.;
is a double bond, etc.;
one of W
1
and W
2
is E-O—W, etc., and the other is a hydrogen atom, etc.; E is a divalent group derived from a benzene ring, etc., by removing two hydrogen atoms therefrom; W is a group of formula (II-1):
which has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for prevention or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.
Use of thiazole derivatives and analogues in the treatment of cancer
申请人:Westman Jacob
公开号:US20090156644A1
公开(公告)日:2009-06-18
There is provided a use of a compound of formula (I), wherein X, Y, T, W, A
1
, A
2
R
1
, R
5
and R
6
have meanings given in the description for the manufacture of a medicament for the treatment of cancer.
The invention provides a compound or its pharmaceutically-acceptable salt of formula (I):
wherein A1 is a hydrogen, etc.; j and k are 0 or 1;
is a double bond, etc.;
is a double bond, etc.;
one of W1 and W2 is E-O-W, etc., and the other is a hydrogen atom, etc.; E is a divalent group derived from a benzene ring, etc., by removing two hydrogen atoms therefrom; W is a group of formula (II-1):
which has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for prevention or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.