Mami Inoue

Isolation and structures of citropone-A and -B from Citrus plants, first examples of naturally-occurring homoacridone alkaloids containing a tropone ring system

Abstract The first isolation of homoacridone alkaloids, citropone-A ( 1 ) and -B ( 2 ), from the root bark of Citrus grandis Osbeck f. buntan Hayata and C . natsudaidai Hayata is described.

Two flavanones from Citrus species

Abstract The new flavanones, hiravanone and yukovanol were isolated from root extracts of some Citrus species and structures were determined by spectrometric and synthetic methods.

New acridone alkaloid and coumarin from Citrus plants

A new acridone alkaloid citramine and a new coumarin osthenon were isolated from the root of the hybrid seedlings of Ogonkan X Hyuganatsu and their structures were elucidated on the basis of spectroscopic data

New Acrimarines from Citrus Plants

Five new acrimarines (acridone-coumarin dimers) were isolated from some Citrus plants (Rutaceae) and their structures were elucidated by spectroscopic method

Spectrometric elucidation of acrimarines, the first naturally occurring acridone–coumarin dimers

The structures of acrimarine-A (1), -B (2), -C (3), -D (4), -E (5), -F (6), and -G (7), novel acridone alkaloids carrying a coumarin unit, from the root of Citrus funadoko have been elucidated by spectrometric studies using 1H-13C long-range COSY experiments; acrimarine-A (1) and -F (6) have also been synthesized from the corresponding acridones and coumarins.