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Paper | Regular issue | Vol 41, No. 10, 1995, pp.2313-2326
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7191
Paratocarpins F - L, Seven New Isoprenoid-substituted Flavonoids from Paratocarpus venenosa Zoll

Yoshio Hano, Naoyuki Itoh, Akio Hanaoka, and Taro Nomura*

*Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274, Japan


Two new isoprenoid substituted chalcones, paratocarpins F (1) and G (2), along with five new isoprenoid substituted flavanones, paratocarpins H (3), I (4), J (5), K (6), and L (7), were isolated from the Indonesian moraceous plant, Paratocarpus (= Artocarpus) venenosa Zoll. The structures of paratocarpins F, G, H, I, J, K, and L were shown to be 1, 2, 3, 4, 5, 6, and 7, respectively, on the basis of spectroscopic and chemical evidence.