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Chemical compound
Prymnesin-B1 is a chemical with the molecular formula C91H132ClNO34. It is a member of the prymnesins, a class of ladder-frame polyether phycotoxins made by the alga "Prymnesium parvum". It is known to be toxic to fish. It is a so called "B-type" prymnesin, which differ in the number of backbone cycles when compared to A-type prymnesins like prymnesin-2.
Structures.
Prymnesins-B1 is formed of a large polyether polycyclic core with several conjugate double and triple bonds, chlorine and nitrogen heteroatoms and a single sugar moiety consisting of α--galactopyranose.
Biosynthesis.
The backbone of B-type prymnesins like prymnesin-B1 is reportedly made by giant polyketide synthase enzymes dubbed the "PKZILLAs".
References.
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