Phytochemical Investigation On The Pet-ether Extractsof The Aerial Parts Of Laggera Tomentosa

Phytochemical investigation on the pet-ether extract of the aerial parts of Laggerarntomentosa afforded two eudesmane derivatives, 4α-acetoxy-3α-angeloyloxy-7,11-dehydroeudesman-rn8-one and 4 α -acetoxy-3 α-(2’,3’-epoxy-2’-methylbutyrate)-11-hydrroxy-rn6,7-dehydro-eudesman-8-one. 4α-acetoxy-3α-ang-eloyloxy-7,11-dehydroeu- desman-8-rnone has been isolated before from L. tomentosa and Bluma alata. 4α-acetoxy-3α-(2’,3’-rnepoxy-2’-methylbutyrate)-11-hydroxy-6,7-dehydro-eudesman-8-one has been isolatedrnbefore from Pluchea odorata but not isolated from Laggera tomentosa. Their structuresrnhave been established by spectroscopic means.

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