Generation of 3-piperidine(methan)amines and cyclic 3-piperidine-methanamines as potential substance P antagonists
摘要:
A general method is described for the synthesis of 3-piperidine(methan)amines and their cyclic analogues. The 3,5-dichloro-2H-1,4-oxazin-2-ones 6 and 3-aryl substituted analogues are reacted with acetylenic dienophiles yielding pyridines. Further catalytic hydrogenation and functional group transformation (1) or substitution (2-3) with ring closure reactions (4) followed by hydrogenation provided the 2,3,5-cis substituted piperidines 1-3 and a cis substituted [3,4-c]pyrrolopiperidine 4. These compounds have recently raised great interest due to their Substance P antagonist profiles. (C) 1997 Elsevier Science Ltd.
通过与取代的炔属化合物的环加成消除反应,合成3-官能化的5-氯-6-甲基-2 H -1,4-恶嗪-2-酮和吡啶。
摘要:
通常在适当的条件下,通过亲电催化避免内酯功能的反应,在3,5-二氯-6-甲基-2 H -1,4-恶嗪-2-酮中实现氯亚胺基的选择性官能化。已表明3-取代的5-氯-6-甲基-2 H -1,4-恶嗪-2-酮中的氮杂二烯体系易于与单取代的炔属化合物反应,并通过环加成消除法以优异的收率得到多官能化吡啶。讨论了通常较高的区域选择性及其对3-取代基性质的依赖性。
The Synthesis of 3-Functionalized 5-chloro-6-methyl-2H-1,4-oxazin-2-ones and of pyridines from cycloaddition-elimination reactions with substituted acetylenic compounds.
作者:Koen J. Van Aken、Gerrit M. Lux、Geert G. Deroover、Lieven Meerpoel、Georges J. Hoornaert
DOI:10.1016/s0040-4020(01)90431-4
日期:1994.4
electrophilic catalysis avoiding reaction of the lactone function. The azadiene system in the 3-substituted 5-chloro-6-methyl-2H-1,4-oxazin-2-ones is shown to react easily with monosubstituted acetyleniccompounds yielding polyfunctionalized pyridines in excellent yield via a cycloaddition-elimination process. The usually high regioselectivity and its dependence on the nature of the 3-substituent is discussed
通常在适当的条件下,通过亲电催化避免内酯功能的反应,在3,5-二氯-6-甲基-2 H -1,4-恶嗪-2-酮中实现氯亚胺基的选择性官能化。已表明3-取代的5-氯-6-甲基-2 H -1,4-恶嗪-2-酮中的氮杂二烯体系易于与单取代的炔属化合物反应,并通过环加成消除法以优异的收率得到多官能化吡啶。讨论了通常较高的区域选择性及其对3-取代基性质的依赖性。
Generation of 3-piperidine(methan)amines and cyclic 3-piperidine-methanamines as potential substance P antagonists
作者:Nele Knoops、Geert Deroover、Zhang Jidong、Frans Compernolle、Georges J. Hoornaert
DOI:10.1016/s0040-4020(97)00791-6
日期:1997.9
A general method is described for the synthesis of 3-piperidine(methan)amines and their cyclic analogues. The 3,5-dichloro-2H-1,4-oxazin-2-ones 6 and 3-aryl substituted analogues are reacted with acetylenic dienophiles yielding pyridines. Further catalytic hydrogenation and functional group transformation (1) or substitution (2-3) with ring closure reactions (4) followed by hydrogenation provided the 2,3,5-cis substituted piperidines 1-3 and a cis substituted [3,4-c]pyrrolopiperidine 4. These compounds have recently raised great interest due to their Substance P antagonist profiles. (C) 1997 Elsevier Science Ltd.
Van der Eycken, Erik; Jidong, Zhang; Kilonda, Amuri, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2002, # 5, p. 928 - 937
作者:Van der Eycken, Erik、Jidong, Zhang、Kilonda, Amuri、Compernolle, Frans、Toppet, Suzanne、Hoornaert, Georges、Van der Auweraer, Mark、Jackers, Carine、Verbouwe, Wouter、De Schryver, Frans C.