作者: Olivier Colin , Christine Greck , Damien Prim , Christine Thomassigny
关键词: Stereochemistry 、 Pyridine 、 Chemistry 、 Organic chemistry 、 Amine gas treating 、 Prins reaction 、 Sequence (biology) 、 Anabasine 、 Alkaloid
摘要: The formation of pyridine-containing bisheterocycles through a Prins-type cyclisation is described. Pyridine–tetrahydropyran and pyridine–piperidine conjugates could be efficiently obtained using various carbaldehydes including dicarbaldehydes, either homoallylic alcohols or amine. Selective partial complete hydrogenation led to new bisheterocycle combinations. A two-step sequence involving an aza-Prins cylisation allowed us prepare the alkaloid anabasine.