Total synthesis of upial, a marine sesquiterpene possessing bicyclo[3.3.1]nonane ring system
作者:Hiroto Nagaoka、Kimiyuki Shibuya、Yasuji Yamada
DOI:10.1016/s0040-4020(01)80785-7
日期:1994.1
The total synthesis of marine sesquiterpene upial was achieved starting from d-mannitol via sequential Michael reaction of the lithium enolate of 5 with methyl (E,S)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2-pentenoate ((E)-6), fragmentation reaction of tricyclic compound 22 and samarium(II) iodide-induced cyclization of diformate 3.
从d-甘露醇开始,通过5的烯醇锂与甲基(E,S)-3-(2,2-二甲基-1,3-二氧戊环-4-基)-2-戊烯酸酯((E)-6),三环化合物22的裂解反应和碘化sa(II)诱导的二甲酸酯3环化。