Trace element analysis, in the leaves of five kinds greening plants (Buxus, Picea, Pine, Juniperus and Platycladus) from eight uniform distribution sites Fuxin, a typical traditional resource-based city northeast China, was carried out to study purification ability difference urban spatial tendency heavy metal elements whole area. In terms Platycladus had better environmental capacity for Cd, A...

From the stems of Rubia wallichiana DECNE, thirty-four structurally related compounds were isolated and identified. Three of them, namely rubiawallin-A (1), -B (2), and -C (3), constitute the first report of their occurrence from the natural source. Their structures were determined by comprehensive analyses of their 1D and 2D NMR, and electron impact (EI) mass spectral data. Furthermore, an in ...

The systematic investigation on the roots of Taxus wallichiana has resulted in the isolation of nine taxoids-taxol 1 baccatin III 2, baccatin IV 3, taxusin 4, a C-14 oxygenated taxoid 5, I~-hydroxybaccatin 16, pentaacetoxy taxadiene 7, a dibenzoylated rearranged taxoid 8, 7-xylosyl-1 O-deacetyl-taxol C 9 and three phenolic compounds (-) seco-isolariciresinol 11, taxiresinol 12 and isotaxiresino...

Leptographium spp. are commonly associated with bark beetles and weevils (Coleoptera: Curculionidae), and some are important tree pathogens. In a recent survey of diseases and insect pests of conifer trees in Bhutan, the root collar weevil, Hylobitelus chenkupdorjii was found girdling young Himalayan blue pine (Pinus wallichiana) trees in Central Bhutan. Intensive wood staining and a Leptograph...

The Himalayan yew, Taxus wallichiana Zucc., is an endangered species with a scatted distribution in the Eastern Himalayas and southwestern China. In the present study, 10 microsatellite markers from the genome of T. wallichiana were developed using the protocol of fast isolation by amplified fragment length polymorphism of sequences containing repeats (FIASCO). Polymorphism of each locus was as...

In the course of our studies on antiprotozoal natural products and following recent discovery that certain aminosteroids aminocycloartanoid compounds from Holarrhena africana A. DC. (Apocynaceae) Buxus sempervirens L. (Buxaceae), respectively, are strong selective antitrypanosomal agents, we have extended these to another plant, related latter—namely, Pachysandra terminalis Sieb. Zucc. (Buxacea...