揭示了在环境氧存在下温和的铂催化叔胺的α,β-C(sp 3)-H键的氧化脱氢,随后原位形成的烯胺与各种硝基烯烃反应导致形成两个锅合成协议,涉及迈克尔加成消除和迈克尔加成环化。通过使用与当前氧化条件相容的不同官能化硝基烯烃,可以方便地分别获得两种结构上不同的产物,即三取代的烯胺和发色[2,3- b ]哌啶。
A third strategy for cross-dehydrogenative coupling reaction has been reported via platinum-catalyzed sp3 C–H and sp3 C–H coupling reaction in the absence of oxidant. Nitroalkanes as well as dialkyl malonate derivatives, β-keto esters and malononitrile are active participants in this coupling reaction. Both cyclic and acyclic non-activated simple ketones are good reactants in this reaction.
various cis-2,3-diacetoxylated piperidines. On the other hand, tetrahydroisoquinoline derivatives gave various α-C−H functionalized products in the presence of PhI(OAc)2. Nitroalkanes, dialkyl malonates, and β-keto ester are active participants in this couplingreaction. Meanwhile, α-amino nitriles can also be obtained by oxidativecoupling of amines with malononitrile.
Neue Phenylpiperidinderivate, Verfahren zu ihrer Herstellung, diese enthaltende pharmazeutische Präparate und ihre Verwendung
申请人:CIBA-GEIGY AG
公开号:EP0007067A1
公开(公告)日:1980-01-23
Substituierte, gegebenenfalls einfach ungesättigte 1-Benzyl-phenylpiperidine der Formel
worin R, einen in 1-Stellung durch gegebenenfalls substituiertes Benzyl substituierten, gegebenenfalls einfach ungesättigten Piperidylrest bedeutet, Ph einen gegebenenfalls substituierten Phenylenrest darstellt und R einen gegebenenfalls substituierten Niederalkylrest bedeutet, und ihre pharmazeutisch verwendbaren Salze haben antithrombotische Eigenschaften. Sie können als Arzneimittel dienen und als Pharmazeutika verwendet werden.
式中 R 代表在 1 位被任选取代的苄基取代的任选单不饱和 1-苄基苯基哌啶,Ph 代表任选取代的亚苯基基,R 代表任选取代的低级烷基。
其中 R 代表在 1 位上被任选取代的苄基任选单不饱和哌啶基,Ph 代表任选取代的亚苯基,R 代表任选取代的低级烷基。它们可以作为药物使用。
5-HYDROXYTRYPTAMINE 1B RECEPTOR-STIMULATING AGENT FOR USE AS A PROMOTER OF SATELLITE CELLS SELF-RENEWAL AND/OR DIFFERENTIATION
申请人:INSTITUT PASTEUR
公开号:US20180200207A1
公开(公告)日:2018-07-19
The present invention relates to the field of muscle regeneration, and more particularly to the replenishment of the in vivo muscle stem cells pool. It more specifically relates to a 5-hydroxytryptamine B1 receptor-stimulating agent, and to a composition comprising said agent, for use as i) a promoter of satellite cells self-renewal and/or differentiation, and/or ii) an agent preventing and/or inhibiting the satellite cells pool exhaustion. The invention further encompasses therapeutic and screening methods.
Platinum/Scandium-Cocatalyzed Cascade Cyclization and Ring-Opening Reaction of Tertiary Amines with Substituted Salicylaldehydes to Synthesize 3-(Aminoalkyl)coumarins
oxidative dehydrogenation of α,β-C(sp3)−H bonds of tertiary amines in the presence of ambient oxygen followed by reactions with substituted salicylaldehydes is revealed. The in situ formed enamines reacted with various salicylaldehydes, which resulted in the development of a one-pot synthetic protocol involving aldol reaction, cyclization, and then ring-opening.