AMIDE DERIVATIVES AND EXTERNAL SKIN OR HAIR CARE PREPARATIONS

摘要

This invention relates to amide derivatives represented by formula (1), amide derivative synthesis intermediates represented by formula (2), (3) or (4), and external skin care preparations, cosmetic hair care formulations and bath medicines containing the amide derivatives (1), wherein R<1> and R<1a> are, for example, tetradecyl or hexadecyl, R<2> is, for example, tridecyl or pentadecyl, R<3> is, for example, ethylene or trimethylene, R<3a> is, for example, trimethylene, and R<4>, R<4a> and R<4b> are, for example, methoxy or ethoxy. When added to external skin care preparations, bath medicines and cosmetic hair care formulations, the amide derivatives (1) exhibit advantageous effects such as skin-roughness preventing/curing effects and hair touch-feeling improving effects.