Amide-Directed Catalytic Asymmetric Hydroboration of Trisubstituted Alkenes
作者:Sean M. Smith、James M. Takacs
DOI:10.1021/ja908257x
日期:2010.2.17
rhodium-catalyzed reaction is stereospecific. In addition, simple TADDOL-derived phenyl monophosphite ligands in combination with Rh(nbd)(2)BF(4) afford highly enantioselective catalysts (seven examples, 91-98% ee). These catalysts provide an alternative methodology to prepare Felkin or anti-Felkin acetate-aldol products and related derivatives that are obtainable from the intermediate chiral organoboranes
The invention provides compounds of the formula (I):
The compounds have activity against cyclin dependent kinases, glycogen synthase kinase and Auroa kinases and are therefore useful to treat cancer and viral diseases.
4-(3-Butynyl)Aminopyrimidine Derivatives as Pest Control Agents for Agricultural and Horticultural Use
申请人:Sakai Masaaki
公开号:US20120136150A1
公开(公告)日:2012-05-31
Novel 4-(3-butynyl)aminopyrimidine derivatives represented by general formula [I] are useful as pest control agents. In general formula [I], R
1
is a mono- or bi-cyclic ring which may contain 0 to 3 heteroatoms, for example, phenyl or oxazolyl; R
2
is a hydrogen atom, —R, —OR, —C(O)OR, —C(O)NHR, —CONR
2
(wherein R is straight-chain or branched C
1-8
alkyl, or the like), hydroxyalkyl, or the like; R
3
is a hydrogen atom, a halogen atom, acyloxy represented by (straight-chain or branched C
1-8
aliphatic hydrocarbon group) —CO—O—, or the like; and R
4
is a hydrogen atom, a halogen atom, C
1-6
alkyl, or the like, or alternatively, R
4
and R
3
together with the carbon atoms on the pyrimidine ring may form a thiophene ring, a pyrrole ring, an imidazole ring, a benzene ring, a pyrimidine ring, a furan ring, a pyrazine ring, or a pyrrolidine ring.
4-(3-butynyl)aminopyrimidine derivatives as pest control agents for agricultural and horticultural use
申请人:Sakai Masaaki
公开号:US08586505B2
公开(公告)日:2013-11-19
Novel 4-(3-butynyl)aminopyrimidine derivatives represented by general formula [I] are useful as pest control agents. In general formula [I], R1 is a mono- or bi-cyclic ring which may contain 0 to 3 heteroatoms, for example, phenyl or oxazolyl; R2 is a hydrogen atom, —R, —OR, —C(O)OR, —C(O)NHR, —CONR2 (wherein R is straight-chain or branched C1-8 alkyl, or the like), hydroxyalkyl, or the like; R3 is a hydrogen atom, a halogen atom, acyloxy represented by (straight-chain or branched C1-8 aliphatic hydrocarbon group) —CO—O—, or the like; and R4 is a hydrogen atom, a halogen atom, C1-6 alkyl, or the like, or alternatively, R4 and R3 together with the carbon atoms on the pyrimidine ring may form a thiophene ring, a pyrrole ring, an imidazole ring, a benzene ring, a pyrimidine ring, a furan ring, a pyrazine ring, or a pyrrolidine ring.