1997 terpenes

terpenesU 0200

18 - 221Synthesis and Biological Activities of Degraded Limonoids, (±)-Fraxinellonone and Its Related Compounds. — The first synthesis oftitle compound (II) is achieved starting from keto lactone (I) and transformed toits analogues isofraxinellone (III) and fraxinellone (IV) (no experimental detailsgiven). The products are found to exhibit moderate insect-antifeeding activityand ichthyotoxic effects. — (OKAMURA, H.; YAMAUCHI, K.; MIYAWAKI,K.; IWAGAWA, T.; NAKATANI, M.; Tetrahedron Lett. 38 (1997) 2, 263-266;Dep. Chem., Fac. Sci., Kagoshima Univ., Kagoshima 890, Japan; EN)

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