在碳-碳双键和氮上具有各种取代方式的αβ-烯烃酰胺都被镁和甲醇还原为相应的饱和酰胺。相同的还原体系将共轭双键处的N-苄基-8-氮杂双环[4.3.0] nona-1(6),3-dien-7-还原为顺式和反式二氢衍生物的混合物。分离的非共轭双键即使在3,4-二苯基取代的化合物中也不会还原。镁和甲醇降低喹啉-2(1 H ^) -酮其3,4-二氢衍生物,和5,6,7,8-四氢喹啉-2(1 H ^) -酮于两个二氢衍生物的混合物。
The first direct use of carbon dioxide in the lactamization of alkenyl and heteroaryl C−H bonds to synthesize important 2‐quinolinones and polyheterocycles in moderate to excellent yields is reported. Carbon dioxide, a nontoxic, inexpensive, and readily available greenhouse gas, acts as an ideal carbonyl source. Importantly, this transition‐metal‐free and redox‐neutral process is eco‐friendly and desirable
[EN] HETEROCYCLIC SUBSTITUTED PIPERAZINES FOR THE TREATMENT OF SCHIZOPHRENIA<br/>[FR] PIPERAZINES HETEROCYCLIQUES SUBSTITUEES POUR LE TRAITEMENT DE LA SCHIZOPHRENIE
申请人:WARNER LAMBERT CO
公开号:WO2004026864A1
公开(公告)日:2004-04-01
This invention relates to compounds of the formula 1 wherein X, Y, Z, A, R', R2, R3, R4, R9, W' and W2 are defined as in the specification, pharmaceutical compositions containing them and their use in the treatment of central nervous system and other disorders.
A convenient one-pot preparation of 4-substituted or 3,4-disubstituted quinolin-2(1H)-ones from 2-isocyanostyrene derivatives, which involves mCPBA oxidation to the corresponding isocyanate intermediates followed by electrocyclization, is described.
Heterocyclic substituted piperazines for the treatment of schizophrenia
申请人:——
公开号:US20040138230A1
公开(公告)日:2004-07-15
This invention relates to compounds of the formula 1
1
wherein X, Y, Z, A, R
1
, R
2
, R
3
, R
4
, R
9
, W
1
and W
2
are defined as in the specification, pharmaceutical compositions containing them and their use in the treatment of central nervous system and other disorders.
The present invention relates generally to chemical compounds and methods for their use and preparation. In particular, the invention relates to chemical compounds which may possess useful therapeutic activity, use of these compounds in methods of therapy and the manufacture of medicaments as well as compositions containing these compounds.