Chemical and Pharmaceutical Bulletin p. 906 - 912 (1998)
Update date:2022-09-26
Topics:
Toda, Jun
Niimura, Yoshihiro
Takeda, Kaoru
Sano, Takehiro
Tsuda, Yoshisuke
A new synthetic route to Erythrina alkaloids by formation of ring C utilizing a Pummerer-type intramolecular cyclization was developed. The N- (2-phenylthioethyl)-dioxopyrroline (3) was converted to 13 in five steps with satisfactory overall yield (69%) b
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