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 totalsynthesis of marinesesquiterpene 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.