Showing papers on "Cestrum published in 1999"
TL;DR: In this article, spirosta-5, 25(27)-diene-1β, 2α, 3β, 12β-tetrol, 3-O-β-D-galactopyranoside (2) was determined from the leaves of Cestrum sendtenerianum.
Abstract: New Polyhydroxylated spirostanol sapogenin (1) and saponin (2) were isolated from the leaves of Cestrum sendtenerianum (Solanaceae). Their Structures were determined to be spirosta-5, 25(27)-diene-1β, 2α, 3β, 12β-tetrol (1) and spirosta-5, 25(27)-diene-1β, 2α, 3β, 12β-tetrol 3-O-β-D-galactopyranoside (2), respectively, on the basis of spectroscopic analysis, including two-dimensional NMR techniques, and the result of hydrolytic cleavage.
6 citations
TL;DR: A new species ofCestrum from the Cordillera de Mérida in Trujillo state is described and illustrated and is distinguished by dendritic pubescence on its branchlets and leaves.
Abstract: A new species ofCestrum from the Cordillera de Merida in Trujillo state is described and illustrated.Cestrum darcyanum, morphologically similar toC. microcalyx Francey, is distinguished by dendritic pubescence on its branchlets and leaves, larger corolla, stamens distended and geniculate above their point of adnation to the corolla, and larger calyx. A key is provided for species of VenezuelanCestrum possessing dendritic pubescence.
2 citations