A regio and stereospecific synthesis of 2-methyl-(Z)-4-(phenylimino)naphth[2,3-d]oxazol-9-one (1) was achieved by using titanium tetrachloride in methylene chloride in the preparation of the imine. The regiochemistry was assigned by single-crystal X-ray analysis. In vitro tests showed that this diastereomer is selectively active for some solid cancer tumors.
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Benedetti-Doctorovich et al. (1994) studied this question.
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