prov:value
| - In preferredembodiments herein, Ar.sup.2 is phenyl, naphthyl, furyl, pyrrolyl, thiophenyl, biphenyl, and thiadazolyl.In the embodiments described in detail herein, Ar.sup.1 is an isoxazole and the compounds are represented by the formulae II: ##STR4## in which R.sup.1 and R.sup.2 are either (i), (ii) or (iii) as follows:(i) R.sup.1 and R.sup.2 independently selected from H, NH.sub.2, NO.sup.2, hal
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