Chemical and Pharmaceutical Bulletin p. 2614 - 2619 (1992)
Update date:2022-08-05
Topics:
Ishii
Ishikawa
Wada
Miyazaki
Kaneko
Harayama
In connection with studies on the structure elucidation of the so-called Reisch's coumarin isolated from Toddalia asiatica, syntheses of two coumarins (4 and 5) were accomplished via the routes shown in Charts 2 and 3, respectively. Melting points and NMR data of the synthesized coumarins (4 and 5) and of related coumarins (5-methoxysuberenon, toddalenone, and Reisch's coumarin) are given in Table I, suggesting that so-called Reisch's coumarin might be 4.
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