ANILINE DERIVATIVES HAVING NITROGEN MONOXIDE SYNTHASE INHIBITORY ACTIVITY
申请人:Chugai Seiyaku
Kabushiki Kaisha
公开号:EP0798292B1
公开(公告)日:2004-11-03
US6534546B1
申请人:——
公开号:US6534546B1
公开(公告)日:2003-03-18
Aniline derivatives possessing an inhibitory effect of nitric oxide synthase
申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US06534546B1
公开(公告)日:2003-03-18
Compounds represented by the general formula (1):
(where R1 is SR6 or NR7R8, where R6 is typically an alkyl group having 1-6 carbon atoms, R7 is a hydrogen atom, an alkyl group having 1-6 carbon atoms or a nitro group, and R8 is a hydrogen atom or an alkyl group having 1-6 carbon atoms; R2 and R3 are each typically a hydrogen atom or an alkyl group having 1-6 carbon atoms; R4 is a hydrogen atom, an alkyl group having 1-6 carbon atoms or an amidino group of which the amine portion may be substituted by an alkyl or nitro group; R5 is a hydrogen atom or an alkyl group having 1-6 carbon atoms; Y1, Y2, Y3 and Y4 which may be the same or different are each typically a hydrogen atom, a halogen atom or an alkoxy group having 1-6 carbon atoms; n and m are each an integer of 0 or 1), or possible stereoisomers or optically active forms of the compounds or pharmaceutically acceptable salts thereof. The compounds possess a potent nitric oxide synthase inhibiting activity and are useful as therapeutics of cerebrovascular diseases.
Equivalent Loading of Directed Arenes in Pd(II)-Catalyzed Oxidative Cross-Coupling of Aryl C–H Bonds at Room Temperature
作者:Chong Mei、Mengdi Zhao、Wenjun Lu
DOI:10.1021/acs.joc.0c02722
日期:2021.2.5
cross-couplings of aryl halides (Ar1–halo) with aryl metallics (Ar2–M) in the loading ratio of 1:1 are popular in chemicalsynthesis. In contrast, there has been less precedence on the same biaryls produced effectively from two normal aryl C–H bonds with equivalent loading. Here, we report that, in a palladium/oxidant/acid catalytic system at room temperature, one arene (Ar1–H, 1 equiv) can highly selectively