Steroids of chemophenetic significance from the Australasian brown alga Cystophora xiphocarpa

Two new steroids were found upon further chemical investigation of the Australian brown alga Cystophora xiphocarpa. The steroids were identified as (3S,16S,22S,24E)-stigmasta-5,24(28)-dien-3,16,22-triol and (3S,16S,22S)-ergosta-5,24(28)-dien-3,16,22-triol. Cystophora xiphocarpa is regarded as the mo...

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Published inBiochemical systematics and ecology Vol. 101; p. 104392
Main Authors Mhd Bakri, Y., Holland, I.P., Motti, C.A., van Altena, I.A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2022
Subjects
Chemophenetics
Chemotaxonomy
Cystophora
Fucales
Steroids
Chemophenetics
Chemotaxonomy
Fucales
Cystophora
Steroids
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Summary:Two new steroids were found upon further chemical investigation of the Australian brown alga Cystophora xiphocarpa. The steroids were identified as (3S,16S,22S,24E)-stigmasta-5,24(28)-dien-3,16,22-triol and (3S,16S,22S)-ergosta-5,24(28)-dien-3,16,22-triol. Cystophora xiphocarpa is regarded as the most ancient extant member of its genus and the steroids it produces are biosynthetically related to those identified from C. brownii, which to this point had been the only novel steroids thus far identified from Cystophora spp. •Two trihydroxy sterols are present in the marine brown alga Cystophora xiphocarpa.•These sterols are reduced derivatives of 3-keto-sterols also from C. xiphocarpa.•There is a clear chemophenetic connection between C. xiphocarpa and C. brownii.
ISSN:0305-1978
1873-2925
DOI:10.1016/j.bse.2022.104392