Novel diaromatic compounds that are vitamin D analogs, methods for their preparation, and cosmetic, dermatological and pharmaceutical formulations containing one or more of these compounds. [Selection figure] NoneビタミンDアナログである新規二芳香族化合物、それらの調製方法、並びにこれらの化合物の1種以上を含む、化粧用調合物、皮膚科用調合物、及び医薬調合物。【選択図】なし