The novel alkaloids, melosatin A and B, isolated from the tumourigenic plant, Melochia tomentosa have been characterized by physical and chemical methods as 6,7-dimethoxy-4-(5-phenylpentyl)isatin (3) and 4-(5-phenylpentyl)isatin (2), respectively; the structure of (3) has been corroborated by synthesis.
G. J. Kapadia, Y. N. Shukla, B. K. Chowdhury, S. P. Basak, H. M. Fales and E. A. Sokoloski, J. Chem. Soc., Chem. Commun., 1977, 535 DOI: 10.1039/C39770000535
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