In earlier papers1 we have described the isolation from a sea hare of two halogenated acetylenic Cl5 straight-chain ethers, one of which exhibits the interesting pharmacologic property of markedly potentiating the activity of pentobarbital in mice. 2 In our continuing search3 for bioactive compounds from marine organisms we have isolated a dibrominated straight-chain Cl6 acetylenic acid, the first compound of this type to be reported, and we ...
