Patent EP-1442737-B1 (EP)
Title: Use of a (dihydro)jasmonic acid derivative for dry skin treatment
Inventor: DALKO MARIA
IPC: A61K8/368
Filed: 2003-12-15
Granted: 2006-03-29
Abstract: Treatment of dry skin or non-inflammatory dry scalp, particularly due to the female menopause, comprises topical application of a firming composition containing a derivative of (dihydro)jasmonic acid (I). Treatment of dry skin or non-inflammatory dry scalp, particularly due to the female menopause, comprises topical application of a firming composition containing a derivative of (dihydro)jasmonic acid of formula (I) and their isomers, stereoisomers and salts. [Image] G : C(O), CH(OR a), CH(NRR'), C=CR bR c, CH(CHR bR c), spiro ring of formula (a), C(OX)(OX') or CYY'; R aH, 1-12C aliphatic or cyclic optionally unsaturated hydrocarbyl (optionally substituted by 1-5 OR'', OC(O)R'', SR'', SC(O)R'', NR''R''', halogen, CN or C(O)OR''), C(O)R'' or C(O)R d; R'', R''' : H, aryl or 1-4C optionally unsaturated hydrocarbyl; R d1-17C alkyl, aryl, aralkyl or alkoxy (all optionally unsaturated and all optionally substituted by one or more OH or methoxy); R b, R cR or C(O)OR e; R e1-4C hydrocarbyl; R, R' : H, linear or cyclic 1-12C hydrocarbyl (optionally unsaturated and/or optionally substituted by 1-5 OR'', OC(O)R'', SR'', SC(O)R'', NR''R''', NHC(O)R'', halogen, CN or C(O)OR'') or C(O)R''; or R+R' : ring; A : 1-3C optionally unsaturated hydrocarbyl, optionally substituted by 1-6C alkyl or aryl; X, X' : 1-3C optionally unsaturated hydrocarbyl; Y, Y' : halogen; R 1C(O)OR, CH 2OR, C(O)NRR', C(O)R, CH 2R', SO 2OR, PO 3RR', NHR or NRR'; and R 21-18C linear or cyclic optionally unsaturated hydrocarbyl (optionally substituted by 1-5 OR'', OC(O)R'', SR'', SC(O)R'', NR''R''', NHC(O)R'', halogen, CN or C(O)OR'') or C(O)R''. [Image] Independent claims are also included for: (1) new (dihydro)jasmonic acid derivatives of formulae (II) and (III) and their isomers, stereoisomers and salts; (2) a skin firming composition containing (II) or (III); and (3) treatment for skincare, skin cleansing or make-up comprising topical application of a composition containing (II) or (III). [Image] G' : CH(OR aa), CH(NR yR y'), C=CR bbR cc or CH(CHR bbR cc); R aa1-12C aliphatic or cyclic optionally unsaturated hydrocarbyl (optionally substituted by 1-5 OR'', OC(O)R'', SR'', SC(O)R'', NR''R''', halogen, CN or C(O)OR''); R bb, R cc, R x, R y, R y'H or 1-12C aliphatic or cyclic optionally unsaturated hydrocarbyl (optionally substituted by 1-5 OR'', OC(O)R'', SR'', SC(O)R'', NR''R''', halogen, CN, C(O)OR'' or C(O)R''); or R y+R y' and/or R bb+R ccring; provided that, when G' = CH(NH(CH 2) 2N(CH 3) 2), then R 1 = C(O)OR and R 2 = n-pentyl. ACTIVITY : Dermatological. Human sebocytes (cell line SZ95) were immortalized by cell culture according to the method of Zouboulis et al ( J. Invest. Dermatol., 113, 1011-1020) and incubated for 48 hours with 0.001M methyl dihydrojasmonate. The cells were treated with Nile Red (1 Microg/ml) and cellular lipid concentration measured by fluorescence (485-540 nm for neutral lipids and 540-620 nm for non-neutral lipids). For samples treated with methyl dihydrojasmonate, concentration of neutral lipids synthesized in the cells was increased by 98% compared with untreated controls (p  0.001). MECHANISM OF ACTION : None given.