| 摘要 |
A compound of the formula (I): <IMAGE> (I) and pharmaceutically acceptable salts thereof wherein R1 is hydrogen or C1-6 alkyl or an acyl group of 1 to 8 carbon atoms; n is 2, 3 or 4; X is halogen; and the OR1 and HN(CH2)nX moieties are trans; has anti-hypertensive activity and a low level of cardiac side-effects.
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