{"title":"番石榴叶中的三萜化合物","authors":"S. Begum, B. Siddiqui, S. Hassan","doi":"10.1080/10575630290004251","DOIUrl":null,"url":null,"abstract":"Three pentacyclic triterpenoids including one new guajavanoic acid ( 2 ) and two known obtusinin ( 1 ) and goreishic acid I ( 3 ) have been isolated from the leaves of Psidium guajava . The new constituent 2 has been characterized as 2 f -hydroxy-3 g - p-E -coumaroyloxyurs-12, 18-dien-28-oic acid through 1 H-NMR and 13 C-NMR (broad band and DEPT). This is the first report of isolation of compound 1 and 3 from the genus Psidium .","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"23","resultStr":"{\"title\":\"Triterpenoids from Psidium Guajava Leaves\",\"authors\":\"S. Begum, B. Siddiqui, S. Hassan\",\"doi\":\"10.1080/10575630290004251\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Three pentacyclic triterpenoids including one new guajavanoic acid ( 2 ) and two known obtusinin ( 1 ) and goreishic acid I ( 3 ) have been isolated from the leaves of Psidium guajava . The new constituent 2 has been characterized as 2 f -hydroxy-3 g - p-E -coumaroyloxyurs-12, 18-dien-28-oic acid through 1 H-NMR and 13 C-NMR (broad band and DEPT). This is the first report of isolation of compound 1 and 3 from the genus Psidium .\",\"PeriodicalId\":18873,\"journal\":{\"name\":\"Natural Product Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"23\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Natural Product Letters\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/10575630290004251\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Natural Product Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/10575630290004251","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Three pentacyclic triterpenoids including one new guajavanoic acid ( 2 ) and two known obtusinin ( 1 ) and goreishic acid I ( 3 ) have been isolated from the leaves of Psidium guajava . The new constituent 2 has been characterized as 2 f -hydroxy-3 g - p-E -coumaroyloxyurs-12, 18-dien-28-oic acid through 1 H-NMR and 13 C-NMR (broad band and DEPT). This is the first report of isolation of compound 1 and 3 from the genus Psidium .
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