| 摘要 |
<p>The novel title cpds. are of formula: (in which R1 and R2 are independently H, F, Cl, phenyl, 1-4C alkoxy, or CF3, provided that if R1 and R2 are both CF3, they may not be on adjacent C atoms, and (a) either A and b together represent a second C-C bond in which case R1 and R2 may not both be H, and when one of R1 and R2 is H, the other may not be H, and when one of R1 and R2 is H, the other may not be phenyl in the p-posn. or (b) A is OH, and B is H) together with their mineral or organic acid salts.</p> |
