New diterpene glycosides of the fungus Acremonium striatisporum isolated from a sea cucumber

Three new diterpene glycosides, virescenosides V (1), W (2), and X (3) have been isolated from a marine strain of Acremonium striatisporum KMM 4401 associated with the holothurian Eupentacta fraudatrix. Their structures have been elucidated on the basis of high resolution mass spectrometry, 1D and 2...

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Bibliographic Details
Published in:Natural product research 2006-08, Vol.20 (10), p.902-908
Main Authors: Afiyatullov, Shamil Sh, Kalinovsky, Anatoly I., Pivkin, Mikhail V., Dmitrenok, Pavel S., Kuznetsova, Tatyana A.
Format: Article
Language:English
Subjects:
Acremonium - chemistry
Acremonium striatisporum
Animals
Diterpene glycosides
Diterpenes - chemistry
Diterpenes - isolation & purification
Eupentacta fraudatrix
Glycosides - chemistry
Glycosides - isolation & purification
Holothurioidea
Marine fungi
Molecular Structure
Nuclear Magnetic Resonance, Biomolecular
Optical Rotation
Sea Cucumbers - microbiology
Spectrometry, Mass, Fast Atom Bombardment
Spectrophotometry, Ultraviolet
Stereoisomerism
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Summary:Three new diterpene glycosides, virescenosides V (1), W (2), and X (3) have been isolated from a marine strain of Acremonium striatisporum KMM 4401 associated with the holothurian Eupentacta fraudatrix. Their structures have been elucidated on the basis of high resolution mass spectrometry, 1D and 2D NMR ( 1 H, 13 C, DEPT, COSY 45, COSY RCT, HSQC, HMBC, and NOESY spectra) as 19-O-β-D-altropyranosyl-7-oxo-isopimara-8(14),15-diene-2α,3β-diol (1), 19-O-β-D-altropyranosyl-isopimara-7,15-diene-2α,3β,6α-triol (2), and 19-O-β-D-altropyranosyl-isopimara-8,15-diene-2α,3β,7α-triol (3).
ISSN:1478-6419
1478-6427
DOI:10.1080/14786410500277720