Tetrahedron

Synthetic studies on pentacyclic aromatic alkaloids, kuanoniamine A, 11-hydroxyascididemin, and neocalliactine acetate

Y Kitahara, S Nakahara, T Yonezawa, M Nagatsu…

Index: Kitahara, Yoshiyasu; Nakahara, Shinsuke; Yonezawa, Takanobu; Nagatsu, Masanori; Kubo, Akinori Heterocycles, 1993 , vol. 36, # 5 p. 943 - 946

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Citation Number: 28

Abstract

A pentacyclic aromatic alkaloid, kuanoniamine A (6) was synthesized in three steps from 6- methoxybenzothiazole-4, 7-dione (8) and 2-aminoacetophenone (9). 11- Hydroxyascididemin (4) was prepared from 5, 8-quinolinedione (13, 14) or 1, 4- acridinedione (20). The structure of neocalliactine acetate, a derivative of calliactine, was determined to be 5 by total synthesis from 6-methoxy-5, 8-quinolinedione (28) and 2- ...