Stereocontrolled synthesis of functionalized 1-azaspirans
作者:H.E. Schoemaker、W.N. Speckamp
DOI:10.1016/0040-4020(80)80047-0
日期:1980.1
A formal total synthesis of perhydrohistrionicotoxin (H12-HTX) is described based on a stereocontrolled α-acyliminium ion-olefin cyclisation. In the key step of the synthesis three asymmetric C atoms (C6 C7 and C8) are introduced in a single operation leading to the formation of the spiro formate ester 15. Compound 15 is converted to the spirothiolactam alcohol 17, a known precursor of H12-HTX.
基于立体控制的α-酰基亚胺离子-烯烃环化,描述了全氢组氨酸毒素(H 12 -HTX)的正式全合成。在合成的关键步骤中,在一次操作中引入了三个不对称的C原子(C 6 C 7和C 8),导致形成了螺甲酸甲酯15。将化合物15转化为螺硫内酰胺醇17,螺硫内酰胺醇17是H 12 -HTX的已知前体。