cis-Fused hexahydro-4aH-indeno[1,2-b]pyridines: transformation of bridgehead ester group and conversion to tricyclic analogues of NK-1 and dopamine receptor ligands
作者:Tom De Wit、Kristof Van Emelen、Faye Maertens、Georges J Hoornaert、Frans Compernolle
DOI:10.1016/s0040-4039(01)00875-9
日期:2001.7
The bridgehead ester group of cis-fused methyl 2-oxo-9b-phenyl-1,2,3,4,5,9b-hexahydro–4aH-indeno[1,2-b]pyridine-4a-carboxylates obtained via an intramolecular Ritter reaction, was transformed into acid, alcohol, aldehyde, and amine groups. Further elaboration afforded conformationally constrained tricyclic analogues of NK-1 antagonists and a bicyclic dopamine receptor ligand.
顺式稠合的2-氧代-9b-苯基甲基1,2,3,4,5,9b-六氢-4a H-茚并[1,2 - b ]吡啶-4a-羧酸酯的桥头酸酯基分子内的Ritter反应,转化为酸,醇,醛和胺基。进一步的修饰提供了构象受限的NK-1拮抗剂的三环类似物和双环多巴胺受体配体。