Two novel steroidal derivatives from chloroform-soluble extract of <i>Hoya longifolia</i>

<div><p>The structures of two novel steroidal derivatives (<b>1</b> and <b>4</b>) were elucidated. Steroidal derivatives namely fologenin (<b>1</b>) and hoyagenin (<b>4</b>) have been isolated from chloroform-soluble extract of the whole plant of <i>Hoya longifolia</i> (family: Asclepiadaceae), and their structures were determined by using ¹H NMR, ¹³C NMR, ¹H–¹H COSY and FAB-MS techniques as well as chemical degradation and derivatisation.</p>