| 摘要 |
Novel antiparasitic compounds of formula (I), wherein the broken line represents an optional bond, R<1> and R<4> being absent when this bond is present, R<1>, R<3>, R<4> are independently H, OH, halo, mercapto, oxo, oximino, or an organic radical, R<2> and R<7> are organic radicals, R<6> is H or an organic radical and R<12> is OH, halo, C1-C8 alkoxy, C1-C9 alkanoyloxy, or oximino optionally O-substituted by a C1-C8 alkyl, alkenyl, alkynyl, aryl, trialkylsilyl, aralkyl or C1-C9 alkanoyl group. |
