An alkaloid and two lignans fromCuscuta chinensis

Characterization of phenolic compounds in the Chinese herbal drug Tu‐Si‐Zi by liquid chromatography coupled to electrospray ionization mass spectrometry

“…It is used as a tonic in Chinese medicine and has been shown to be able to improve sexual function, regulate the body's endocrine and immune system, and to prevent senescence 2. The chemical constituents of Tu‐Si‐Zi have been investigated in some detail, and mainly comprise flavonols like quercetin, kaempferol, and their glycosides 3, 4. These compounds may be responsible for the biological activities of this drug.…”

Water-Soluble Constituents of Ajowan.

“…The fractions were subjected to Sephadex LH-20, silica gel and Lobar RP-8 column chromatography, and finally, HPLC was used for purification of the compounds. Then, two monoterpenoids (1, 10), light monoterpenoid glucosides (2)(3)(4)(5)(6)(7)(8)(9), one alkyl glucoside (11), one aromatic compound (13), three aromatic compound glucosides (12, 14, 15), two nucleosides (16, 17), and eight glucides (18-25) were obtained from the methanol extract. Among them, monoterpenoid and monoterpenoid glucosides 5 to 10, and aromatic compound glucosides 14 and 15 are new compounds, while glucides 20 and 21 are newly isolated compounds from natural sources.…”

“…Among them, monoterpenoid and monoterpenoid glucosides 5 to 10, and aromatic compound glucosides 14 and 15 are new compounds, while glucides 20 and 21 are newly isolated compounds from natural sources. All glucosides described in this paper were b-D-glucopyranosides, as shown by their 13 C-NMR data, and this was confirmed by hydrolysis to yield D- 5) Their molecular formulae were suggested from the accurate mass number of [MϩH] ϩ or [MϩNa] ϩ ion peaks in the high-resolution positive FAB-MS. Monoterpenoid 1, monoterpenoid glycoside 2, 3 and 4 were identified as 3,7-dimethyloct-3(10)-ene-1,2,6,7-tetrol (a mixture of two stereoisomers), (2S,6z)-3,7-dimethyloct-3(10)-ene-1,2,6,7-tetrol 1-O-b-D-glucopyranoside, 6) 6-hydroxythymol 6-O-b-D-glucopyranoside 7) and 6-hydroxythymol 3-O-b-D-glucopyranoside, 7) respectively. ϩ ion peaks at m/z 351 and 149 in the positive FAB-MS, and had a 1,3,4-trisubstituted benzene ring, one hydroxymethyl and one isopropyl group, in addition to the b-glucopyranosyl moiety.…”

Three new compounds from the roots of Saposhnikovia divaricata

“…Compound 3 was a new compound, assigned as divaricataester C. And the benzofuran glycoside compound was reported from the genus of Saposhnikovia for the first time. However, its corresponding free acid, cnidioside B, has been isolated from the ripe fruit of Cnidium monnieri [7].…”