Triterpene and Sterols from Premna nauseosa Blanco

Phelan G. Apostol; Mark Anthony G. Fran; Chien-Chang Shen; Consolacion Y. Ragasa

Phelan G. Apostol Chemistry Department, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
Mark Anthony G. Fran Chemistry Department, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
Chien-Chang Shen Chemistry Department, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
Consolacion Y. Ragasa Chemistry Department, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines

Keywords: Premna nauseosa Blanco, Verbenaceae, squalene, β-sitosterol, stigmasterol.

Abstract

Chemical investigation of the dichloromethane extract of Premna nauseosa Blanco afforded squalene (1) and a mixture of β-sitosterol (2) and stigmasterol (3) in about 6:1 ratio. The structures of 1-3 were identified by comparison of their NMR data with literature data.