摘要:
Novel transdermal permeation enhancers related to stratum corneum ceramides were investigated. The synthesis of a series of simple compounds based on two selected amino acids, L-serine and glycine, and their enhancement activities are reported. Glycine derivative 3 enhanced the permeation of theophylline through human skin in vitro 12.5 +/- 0.5 times. The relationships between properties of the polar head of the compounds and their activity are discussed. (C) 2003 Elsevier Science Ltd. Ail rights reserved.