Abstract：
:Repeated fractionations of the methanol extract of the subterranean parts (rhizomes and roots) of Gentiana siphonantha afforded two new and five known secoiridoids, in addition to the widespread plant constituents beta-sitiosterol, daucosterol and oleanolic acid. The structures of the new acyl secoiridoid glycosides were elucidated as 6'-gentisoyl 8-epikingiside and 2'-gentisoyl gelidoside mainly by a combination of high field NMR techniques. The known secoiridoids were identified as gentiolactone, gentiopicroside, sweroside, gelidoside and trifloroside. None of these constituents was active against human pathogenic fungi (Candida albican, Aspergillus flavus and Trichoderma viride). The chemotaxonomic significance of the isolates is discussed briefly.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Tan RX,Kong LDdoi
10.1016/s0031-9422(97)00225-2subject
Has Abstractpub_date
1997-11-01 00:00:00pages
1035-8issue
6eissn
0031-9422issn
1873-3700pii
S0031942297002252journal_volume
46pub_type
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