Three undescribed phenols, mandshusica C-E (1-3) and a new lignan, mandshusica F (5), along with six known compounds (4, 6-10) were isolated from the roots and rhizomes of Clematis terniflora var. manshurica (Rupr.) Ohwi.
View Article and Find Full Text PDFTwo new compounds named mandshurica A () and mandshurica B (), together with four known lignans (-) were isolated from the roots and rhizomes of var. (Rupr.) Ohwi.
View Article and Find Full Text PDFEight cephalotaxine-type alkaloids (1-8), including two new compounds cephafortunines A and B (1-2), were isolated from the branches and leaves of Cephalotaxus fortunei var. alpina. Their structures were identified by a series of spectroscopic methods (MS, UV, IR, 1D, and 2D NMR) and comparison with the reported data of known analogs.
View Article and Find Full Text PDFMolecules with diterpene skeletons often possess valuable medicinal properties. Two new diterpenes 1α,6α,7β-triacetoxy-5α-hydroxy-14β-ethyl-O-vouacapane (1) and 2α-acetoxy-14,15-cyclopimara-7β,16-diol (2) were isolated from the seeds of Caesalpinia minax Hance. Their structures were established on the basis of extensive spectroscopic analyses, including HR-ESI-MS, UV, IR, 1D, and 2D NMR (HSQC, HMBC, NOESY) methods.
View Article and Find Full Text PDFSix compounds were isolated from Rhizoma Heterosmilacis Japonicae. They were identified as beta-sitosterol (I) dau-costerol (II),3,3',5,5'-tetrahydroxy-4'-methoxystilbene (III), naringenin (IV), alpha-L-butylsorbopyranoside (V) and macrozamin (VI). The compounds III, IV, V and VI were isolated from this genus for the first time.
View Article and Find Full Text PDFTwo new ent-kaurane-type diterpenoids, E-semiaquilegin (1) and Z-semiaquilegin (2), together with eight known compounds (3-10) were isolated from the dried roots of Semiaquilegia adoxoides (DC.) Makino. The structures of compounds 1 and 2 were elucidated mainly by 2D NMR techniques including 1H-1H COSY, HSQC, HMBC, NOESY as 16alpha-hydroxy-ent-kaurane-17,20-di-(3,4-dihydroxy-E-cinnamoyl) ester and its (Z)-isomer.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
September 2004
Objective: To investigate the chemical constituents from the rhizomes of Smilax glabra.
Method: The compounds were isolated by column chromatography with silica gel, Diaion HP-20 and ODS as packing materials, and HPLC. Their structures were determined on the basis of their spectral evidence.