Alkyl ether analogs of phosphatidylcholine are orally active in hypertensive rabbits

1-0-alkyl ethers of phosphatidylcholine having an acetoyl in the second position were derived from fresh renal tissue. The main ether so derived had a 16:0 chain. The C16:0 alkyl ether was synthesized de novo. The renally derived and the synthetic ether exerted a similar and powerful antihypertensive action in hypertensive rabbits when given orally in divided doses. This action was prolonged, requiring more than 60 hours after the last input of the compound for recovery of the arterial pressure. As these ethers exerted their antihypertensive action, there was no evidence of adverse effects. Noteworthy was the failure of these depressor compounds to cause renin release. Diuresis-kaliuresis did not occur. A suggestion of sodium retention was noted.