{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T08:31:48Z","timestamp":1791102708351,"version":"4.1.0"},"reference-count":20,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2011,3,9]],"date-time":"2011-03-09T00:00:00Z","timestamp":1299628800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Swiss National Foundation","award":["200020-100083"],"award-info":[{"award-number":["200020-100083"]}]},{"name":"China Scholarship Council and financial support from research project of Shaanxi Province","award":["09JS067"],"award-info":[{"award-number":["09JS067"]}]},{"name":"China Scholarship Council and financial support from research project of Shaanxi Province","award":["08SF01-2"],"award-info":[{"award-number":["08SF01-2"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Reson in Chemistry"],"published-print":{"date-parts":[[2011,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Phytochemical investigation of dichloromethane (DCM) extract from the stems of <jats:italic>Paragonia pyramidata<\/jats:italic> var. <jats:italic>pyramidata<\/jats:italic> L. Rich. (Bur.) resulted in the isolation and characterization of two new triterpenoids 3\u03b2,19\u03b2\u2010dihydroxylup\u201012, 20(29)\u2010diene\u201028\u2010oic acid (1) and 3\u03b2,19\u03b2\u2010dihydroxylup\u201012\u2010en\u201028\u2010oic acid (2), three known triterpenoids lupeol (3), spinosic acid A (4) and oleanolic acid (5), together with four known steroids (20R)\u201022E\u201024\u2010ethylcholesta\u20104,22\u2010dien\u20103\u2010one (6), (20R)\u201024\u2010ethylcholest\u20104\u2010en\u20103\u2010one (7), stigmasterol (8) and \u03b2\u2010sitosterol (9). HREIMS, GC\u2013MS and NMR experiments including HSQC, HMBC, COSY and NOESY were used for the determination of the structures and NMR spectral assignments. This is the first report about the chemical constituents for this plant. Copyright \u00a9 2011 John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/mrc.2726","type":"journal-article","created":{"date-parts":[[2011,3,9]],"date-time":"2011-03-09T06:03:47Z","timestamp":1299650627000},"page":"184-189","source":"Crossref","is-referenced-by-count":12,"title":["Structure elucidation and NMR assignments of two new triterpenoids from the stems of <i>Paragonia pyramidata<\/i> (Bignoniaceae)"],"prefix":"10.1002","volume":"49","author":[{"given":"Xiao\u2010Ling","family":"Wang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne\u2010Emmanuelle","family":"Hay","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"An","family":"Matheeussen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahabir P.","family":"Gupta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt","family":"Hostettmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,3,9]]},"reference":[{"key":"e_1_2_5_2_2","first-page":"330","volume-title":"Systematic Botany of Flowering Plants","author":"Spichiger R. E.","year":"2004"},{"key":"e_1_2_5_3_2","doi-asserted-by":"publisher","DOI":"10.2307\/2399809"},{"key":"e_1_2_5_4_2","doi-asserted-by":"publisher","DOI":"10.2307\/2992043"},{"key":"e_1_2_5_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/np900038j"},{"key":"e_1_2_5_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/np800406q"},{"key":"e_1_2_5_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.phytochem.2007.02.002"},{"key":"e_1_2_5_8_2","doi-asserted-by":"publisher","DOI":"10.1002\/1097-458X(200007)38:7<488::AID-MRC704>3.0.CO;2-G"},{"key":"e_1_2_5_9_2","doi-asserted-by":"publisher","DOI":"10.1021\/np800093a"},{"key":"e_1_2_5_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrc.1954"},{"key":"e_1_2_5_11_2","doi-asserted-by":"publisher","DOI":"10.1021\/np980217v"},{"key":"e_1_2_5_12_2","doi-asserted-by":"publisher","DOI":"10.1590\/S0100-40422008000100004"},{"key":"e_1_2_5_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-9422(02)00520-4"},{"key":"e_1_2_5_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrc.1214"},{"key":"e_1_2_5_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-9422(01)00083-8"},{"key":"e_1_2_5_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9422(75)85072-2"},{"key":"e_1_2_5_17_2","doi-asserted-by":"publisher","DOI":"10.1039\/j39710001067"},{"key":"e_1_2_5_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.steroids.2006.01.016"},{"key":"e_1_2_5_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.steroids.2005.09.004"},{"key":"e_1_2_5_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.steroids.2003.09.012"},{"key":"e_1_2_5_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9422(92)80019-B"}],"container-title":["Magnetic Resonance in Chemistry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmrc.2726","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmrc.2726","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/mrc.2726","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T09:26:02Z","timestamp":1760952362000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/mrc.2726"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,3,9]]},"references-count":20,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2011,4]]}},"alternative-id":["10.1002\/mrc.2726"],"URL":"https:\/\/doi.org\/10.1002\/mrc.2726","archive":["Portico"],"relation":{},"ISSN":["0749-1581","1097-458X"],"issn-type":[{"value":"0749-1581","type":"print"},{"value":"1097-458X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,3,9]]}}}