Patent ID: 6075052
Filing Date: 2000-06-13
Classification: A61K,A61P,A61Q

Abstract:
A skin external preparation comprising a compound represented by the following formula; ##STR16## wherein R.sup.20 represents a hydrogen atom, a C.sub.1-8 alkyl or alkenyl group or an aralkyl group,R.sup.21 represents a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl or aralkyl group,R.sup.22 represents a hydrogen atom or a C.sub.1-6 alkyl or alkenyl group, or with R.sup.23, may form a heterocyclic ring together with the adjacent nitrogen atom,R.sup.23 represents a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl or aralkyl group, or with R.sup.22, may form said heterocyclic ring,R.sup.24 represents a hydrogen atom or a C.sub.1-8 alkyl or alkenyl group, andn stands for an integer of 0 to 5.