title: Identification of triterpenoids in chloroform extract of Agarista mexicana by MS and NMR.
abstract: Detailed structural study of the major triterpenoids from chloroform extract of Agarista mexicana revealed the presence of new pentacyclic triterpene lactone 3ss-hydroxy-ursan-28ss, 19ss-olide together with four known compounds, 12-ursene, campesterol, stigmasterol, sitosterol. These compounds were isolated by chromatography and their structures confirmed by NMR experiments and by MS.
authors.affiliation: Laboratorio de Investigacion de Productos Naturales, Escuela Superior de Ingeniería Química e Industias extractivas IPN, Punto fijo 16, Col. Torres Lindavista C.P. 07708, México D.F., México. rmpg@prodigy.net.mx
authors.forename: Rosa Martha
authors.initials: RM
authors.lastname: Pérez Gutiérrez
mesh_terms: D002725:Chloroform; D029791:Ericaceae / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D010936:Plant Extracts; D014315:Triterpenes; D002725:Chloroform