Brevetoxin B, a group of neurotoxins isolated from the marine dinoflagellate Karenia brevis (formerly Gymnodinium breve)

Brevetoxin-2 (PbTx-2) R = -CH2C(=CH2)CHO
Brevetoxin-3 (PbTx-3) R = -CH2C(=CH2)CH2OH
Brevetoxin-8 (PbTx-8) R = -CH2COCH2Cl
Brevetoxin-9 (PbTx-9) R = -CH2CH(CH3)CH2OHOther B-type Brevetoxins:

Brevetoxin-5 (PbTx-5) R = -CH2C(=CH2)CH2OH, OH in position 37 is acetylated
Brevetoxin-6 (PbTx-6) like PbTx-2, epoxide in position 27-28
Own work
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