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Triterpenoids from the Mangrove Plant Hibiscus tiliaceus
Author(s) -
Feng Chao,
Li XiaoMing,
Ji NaiYun,
Wang BinGui
Publication year - 2008
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200890088
Subject(s) - friedelin , hibiscus , chemistry , triterpenoid , mangrove , botany , stereochemistry , terpene , ecology , biology
Three new triterpenoids with the rarely occurring nigrum skeleton, namely (20 E )‐22‐hydroxynigrum‐20‐en‐3‐one ( 1 ), 21 β ‐hydroxynigrum‐22(29)‐en‐3‐one ( 2 ), and 21 α ‐hydroxynigrum‐22(29)‐en‐3‐one ( 3 ), were isolated from the mangrove plant Hibiscus tiliaceus. Additionally, five known triterpenoids including friedelin ( 4 ), 12‐oleanen‐3 β ‐ol ( 5 ), 3 β ‐hydroxy‐12‐oleanen‐28‐oic acid ( 6 ), 20(29)‐lupen‐3 β ,28‐diol ( 7 ), and cucurbita‐5,23‐dien‐3 β ,25‐diol ( 8 ) were also isolated and identified. The latter structures were elucidated by a detailed NMR and MS analyses, as well as by comparison with reported literature data.