Two new labdane-type diterpenoids cinnamate from <i>Croton decalvatus</i> Esser

<p>Two new labdane diterpene derivatives, crotondecalvatin A (<b>1</b>) and crotondecalvatin B (<b>2</b>) were obtained from the leaves and twigs of <i>Croton decalvatus</i>. The structures of compounds were established on the basis of extensive spectroscopic data.