作者:Joseph J. Tufariello、Harold Meckler、K. Pushpananda Senaratne
DOI:10.1021/ja00337a059
日期:1984.12
The use of nitrones in the synthesis of anatoxin-a, very fast death factor
作者:Joseph J. Tufariello、Harold Meckler、K.Pushpananda A. Senaratne
DOI:10.1016/s0040-4020(01)96699-2
日期:1985.1
The synthesis of anatoxin-a (1) was completed by using the cycloaddition of 1-pyrroline 1-oxide (2) onto dienol (6), a reaction which proceeded with high stereoselectivity, regioselectivity, and site selectivity. The resultant adduct (i.e. 7) was oxidized to a second nitrone (i.e. 8) which undergoes a second closure to afford cycloadduct 9a with regiospecificity. The conversion of 9a into anatoxin-a