The structure of a new ciguatoxin congener. CTX3C (I), isolated from cultures of a dinoflagellate Gumhierdisc~r.~ fmicur was elucidated mainly on the basis of NMR data. I closely resembles gambiettoxiw4b (2). a known cigualoxin precursor, but lacks the butadiine side chain in 2 and has oxocene ring
à propos de gambierdiscus toxicus
✍ Scribed by Paul Lafargue
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 661 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 0338-9898
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✦ Synopsis
Des irritations paffois invalidantes des muqueuses oculaires et nasales, apparues chez des individus travaillant sur le cete ocean d'un atoll, semblent dues & la presence, dans les embruns, de Gambierdiscus toxicus, dont la concentration anormale serait due a. un remaniement du massif corallien.
Gambierdiscus
toxicus -embruns -irritations -muqueuses.
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The axial C6-OH group in gambierol isolated from the dinoflagellate, Gambierdiscus toxicus, was inverted to equatorial disposition and esterified with (S)-and (R)-MTPA. NMR analysis of these esters established S configuration at C6, thus allowing determination of the absolute configuration of the wh
## Abstract Traitée par le chlorure de benzoyle en milieu fortement alcalin, la guanidine fournit la dibenzoylguanidine.