2-Ethynylbenzenealkanamines. A new class of calcium entry blockers
摘要:
A series of 2-(aryl- or alkylethynyl)benzenealkanamines were synthesized. They exhibit antihypertensive activity in spontaneously hypertensive rats and coronary vasodilator activity with minimal negative inotropic activity in the "Langendorff" guinea pig heart in vitro. They have been shown to exert their activity by inhibition of Ca2+ influx across cell membranes. Optimal activity is found among the N-(arylethyl)-5-methoxy-alpha-methyl-2-(phenylethynyl)ben zeneethanamines and -propanamines.
Acetylene amines and their use as vasodilators and antihypertensives
申请人:McNeilab, Inc.
公开号:US04725602A1
公开(公告)日:1988-02-16
Acetylenes of the following formula (I): ##STR1## wherein Y, m, R.sup.1, R.sup.2, R.sup.3, n and R.sup.4 are defined herein and R.sup.5 is hydrogen, alkyl, cycloalkyl or substituted alkyl are useful vasodilators and antihypertensives.
Acetylene compounds of the formula (I): ##STR1## wherein Y, R.sub.1, R.sub.2 R.sub.3, and R.sub.4 are as described herein, m is 0-3, n is 0-2 and Ar is phenyl or an aromatic heterocycle are disclosed. The compounds possess anti-hypertensive and anti-anginal properties and may be used in the treatment of humans. Methods for the preparation and use of such acetylene compounds are also disclosed.
Acetylene compounds of the formula (I): ##STR1## wherein Y, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are as described herein, m is 0-3, n is 0-2 and Ar is phenyl or an aromatic heterocycle are disclosed. The compounds possess antihypertensive and anti-anginal properties and may be used in the treatment of humans. Methods for the preparation and use of such acetylene compounds are also disclosed.
Palladium‐Catalyzed Defluorinative Coupling of Difluoroalkenes and Aryl Boronic Acids for Ketone Synthesis
作者:Guangwu Sun、Herui Liu、Xiu Wang、Wenbo Zhang、Wenjun Miao、Qinyu Luo、Bing Gao、Jinbo Hu
DOI:10.1002/anie.202213646
日期:2023.1.2
A palladium-catalyzed defluorinative coupling reaction of gem-difluoroalkenes and arylboronicacids affords ketones with an α-all-carbon quaternary center. The vinyl difluoromethylene motif serves as an in situ carbonyl precursor that is unprecedented in transition-metal-catalyzed coupling reactions. The key difluoroalkyl palladium(II) RCF2−PdII intermediate and related organometallic species were
钯催化的偕二氟烯烃和芳基硼酸的脱氟偶联反应提供了具有 α-全碳季中心的酮。乙烯基二氟亚甲基基序用作原位羰基前体,这在过渡金属催化的偶联反应中是前所未有的。关键的二氟烷基钯 (II) RCF 2 -Pd II中间体和相关的有机金属物种得到了充分表征。
Palladium-catalyzed intramolecular annulation of difluoroalkenes to difluoro- and trifluoromethylated indane analogs
An intramolecular annulation strategy has been developed for the synthesis of fluoroalkylated indane-type analogs. The difluoromethyl and trifluoromethyl functional motifs could be derived from gem-difluoroalkenes through this palladium-catalyzed reaction. This method is also extendable to other fluoroalkenes and multi-component reactions.