Synthesis of 5/7-, 5/8- and 5/9-bicyclic lactam templates as constraints for external β-turns
作者:Heather M. E. Duggan、Peter B. Hitchcock、Douglas W. Young
DOI:10.1039/b503014e
日期:——
The 5/7-, 5/8- and 5/9-bicyclic lactams 3, 17, 5 and 6 have been synthesised as single diastereoisomers by a route involving ring closing olefin metathesis. The X-ray crystal structure of the amino acid hydrochloride 17 has been carried out and compared to that of the saturated external β-turn constraint 18.
5/7、5/8 和 5/9 的双环内酯 3、17、5 和 6 已通过环闭合烯烃复分解反应合成为单一的非对映体异构体。氨基酸盐酸盐 17 的 X 射线晶体结构已被测定,并与饱和外部 β-转角约束 18 的结构进行了比较。