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Zhong Tao DING Jun ZHOU* Ning Hua TAN Shi Ming DENG Laboratory of Phytochemistry Kunming Institute of Botany Academia Sinica Kunming Department of Chemistry Yunnan University Kunming 《中国化学快报》2001,(8)
In our previous paper~（1-4）, we have reported five new tetraglycosides (named prostratoside A-E) and a new cyclic peptide (named polycarponin A) from this plant. Our continuing study on the EtOAc soluble fraction of this plant led to the isolation of three new saikosaponin-like compounds: prostratoside F-H (1-3). This paper describes the structure elucidation of these three new compounds. Prostratosid F (1): white powder, mp. 186-188oC, [(]+22.0 (c 0.27, MeOH). Its HRFAB-MS gave a [… 相似文献
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InourpreviouspapeF,wehavereportedanewtriterpenoidsaponinfromPolJ,carPonproslratum(Forssk.)Aschers.elSchwein.exAschersI.AsaseriesofourinvestigationonCaryophyIlaceaecyclopeptides=',acontinuingstUdyofthisplantledtotheiso1ationofanewcyclopeptidenamedpolycarponinA.PolycarponinA(l),colorlessneedIes,showednegativereactiontoninhydrinreagent,butpositiveafterhydrolysiswith6moI/LHCl.ItsFABMSgavean[M 2H] ionatnl/z915andthemoIecularformulaC',H,,N,O,derivedfromtheHR-FABMS([M H] atm/z9l4.5o43… 相似文献
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A Triterpenoid Saponin from Polycarpon prostratum 总被引：1，自引：0，他引：1
FromPo{1'cal'Ponproslraluln(Forssk.)Aschers.etSchwein.ExAscherswhichissaidtobetoxicandhasanti-inflammatoryandanodynicactivities',anewtriterpenoidsaponin.namedprostratosideA.wasisolated.ProstratosideA1.mpf250-252"C,[a]5'= 4.3(c0.88,MeOH).0.0018%yield.ItsHRFAB-MSgavea[M-1]'ionatm/zI117.>505,inagreementwiththemolecularformulaC..H,.O:.(cafed."l/zI117.5431).TheiRspectrumshowedabsorptionbandsat3371.1717.1646and1046cm-'.AcomparisonofIwith22a-hydroxy-saikogeninG=showedIwasverysimilarto22a-… 相似文献
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