A new oligosaccharide from Periploca calophylla / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Periploca calophylla.</p><p><b>METHOD</b>Various chromatographic techniques were used to isolate the constituents, and their structures were identified by spectral and chemical methods.</p><p><b>RESULT</b>Two oligosaccharides were isolated from the chloroform part of P. calophylla and their structures were identified as 4-O-acetyl-beta-cymaropyranosyl (1-->4)-O-beta-D-cymaropyranosyl(1-->4)-O-beta-D-canaropyranosyl (1-->4)-O-beta-D-cymaropyranosy(1-->4)-O-oleandronic acid-delta-lactone(1), and perisaccharide B (2).</p><p><b>CONCLUSION</b>Compound 1 is a new compound. Compound 2 is reported for the first time from this plant.</p>

A new cardiac glycoside from Periploca forrestii / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Periploca forrestii.</p><p><b>METHOD</b>The constituents were separate using such various column chromatographic techniques as silica gel, RP-18 silica gel, MCI and Sephadex LH-20. Their structures were identified by such methods as spectral analysis.</p><p><b>RESULT</b>Ten compounds were isolated and identified as periforgenin A-3-O-beta-digitoxopyranoside (1), beta-sitosterol (2), periforoside I (3), ursolic acid (4), periplogenin (5), periplocin (6), glycoside E (7), periplocoside M (8) , daucosterol (9), 2alpha, 3alpha, 23-trihydroxy-urs-12-en-28-oic acid (10).</p><p><b>CONCLUSION</b>Compound 1 was a new cardiac glycoside and compound 8 was reported for the first time from this plant.</p>

Hasubanan type alkaloids in Stephania hernandifolia / 中国中药杂志

<p><b>OBJECTIVE</b>To study the hasubanan type alkaloids in Stephania hernandifolia.</p><p><b>METHOD</b>The dried herbs of S. hernandifolia. were extracted with 95% ethanol. After removal of the solvent, the residue was first partitioned between acid water and petroleum ether, then the aqueous layer was basified and extracted with chloroform to obtain crude alkaloids. Column chromatograghic methods with on silica gel, Rp-18, MCI CHP 20P, Sephadex LH-20 were applied for the isolation and purification of the crude alkaloid fraction. The structures were elucidated by their physicochemical properties and spectral data.</p><p><b>RESULT</b>Nine hasubanan type alkaloids were obtained and identified as aknadinine(1), longanone(2), stephasunoline (3), N-methylstephuline(4), epistephamiersine(5), prostephabyssine(6), aknadilactam(7), dihydroepistephamiersine(8), hasubanonine(9).</p><p><b>CONCLUSION</b>Compounds 2-8 were isolated from this plant for the first time.</p>

Alkaloids in stems and leaves of Stephania cepharantha / 中国中药杂志

<p><b>OBJECTIVE</b>To study the alkaloids in the stems and leaves of Stephania cepharantha.</p><p><b>METHOD</b>The dried stems and leaves of S. cepharantha were percolated with 95% ethanol and the solvent was removed by rotary evaporation to give a concentrate, and the concentrate was extracted by petroleum ether and chloroform. Column chromatograghy on MCI CHP 20P, silica gel, Rp-18, Sephadex LH-20 and polyamide were applied for the isolation and purification of the chloroform fraction. The structures were elucidated by their physicochemical properties and spectral data.</p><p><b>RESULT</b>Eleven alkaloids were obtained and identified as lysicamine (1), tetrahadropalmatine (2), palmatine (3), isocorydione (4), corydalmine (5), corypalmine (6), sinoracutine (7), sinoacutine (8), cepharamine (9), isocorydine (10) and corydine (11).</p><p><b>CONCLUSION</b>Compounds 2-7 were isolated from S. cepharantha for the first time, and compound 7 was isolated from the genus Stephania for the first time, compound 4 was isolated from the Menispermaceae family for the first time.</p>

Flavonoids of Lysimachia paridiformis var. stenophylla / 中国中药杂志

Nine flavonoids were isolated and identified as luteolin (1), luteolin-4'-O-beta-D-glucoside (2), acacetin-7-O-beta-D-glucoside (3), rutin (4), acacetin (5), quercetin (6), quercetin-3-O-beta-D-glucoside (7), kaempferol-3-O-beta-D-glucoside (8), Isorhamnetin-3-O-beta-D-glucoside(9) from Lysimachia paridiformis var. stenophylla, and all these compounds were isolated from this plant for the first time.