Chemistry Letters p. 125 - 126 (1983)
Update date:2022-07-30
Topics:
Niwa, Haruki
Kuroda, Akio
Yamada, Kiyoyuki
Retronecine (1), the necine base of physiologically active pyrrolizidine alkaloids was synthesized in racemic form from ethyl 2,3,5,6-tetrahydro-1H-pyrrolizine-7-carboxylate (2) in five steps.
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(1948)
