Podocarpus elatus

Sterols. A considerable amount of work was devoted to the study of backbone rearrangements. - While partial syntheses of an insect moulting hormone, ecdysone, were announced by several groups, evidence is accumulating on the widespread occurrence in natxire of its hydroxylated derivatives. This year saw the isolation of 20-hydroxy-ecdysone - - from silkworm (ecdysterone), crayfish - (crustecdysone), oak-silk moth, tobacco hornworm, and from plants such as Podocarpus nakaii, Podocarpus elatus, and Achyranthis. The ready isolation of insect-moulting hormones from plants in contrast to -the extremely poor... 

Eedycterone, p-ecdysone, crustecdysone, 20-hy-droxyecdysone a molting hormone, M, 480.65, m.p. 238 °C, found together with Ecdysone (see) in pupae of silkworms (Bombyx mori) in amounts of 2.5 mg/ 500 kg. It has also been isolated from other insects and crustaceans and, more recently, from many plants, including Lemmaphyllum microphyllum Presl., Podocarpus elatus and Trillium smalli. E. differs from ecdysone in having an extra hydroxyl group at position 20. 

Galbraith M N, Horn D H S, Middleton E J, Kaplanis J N, Thompson M J 1973 Structure of podecdysone C, a steroid with moulting hormone activity from the bark of Podocarpus elatus R Br. Experientia 29 782... 

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