A novel method of treating psoriasis which comprises administering a halomethyl derivative of .alpha.-amino acids of the following general structure: ##STR1## wherein Y is FCH.sub.2 --, F.sub.2 CH--, F.sub.3 C--, ClCH.sub.2 --, Cl.sub.2 CH--; Z is .gamma.-guanidinopropyl or R.sub.a HN(CH.sub.2).sub.n -- wherein n is the integer 3 or 4; each of R.sub.a and R.sub.b can be the same or different and is hydrogen, alkylcarbonyl wherein the alkyl moiety has from 1 to 4 carbon atoms and is straight or branched, alkoxycarbonyl wherein the alkoxy moiety has from 1 to 4 carbon atoms and is straight or branched, or ##STR2## wherein R.sub.2 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; R.sub.1 is hydroxy; a straight or branched alkoxy group of from 1 to 8 carbon atoms, --NR.sub.4 R.sub.5 wherein each of R.sub.4 and R.sub.5 is hydrogen or a lower alkyl group of from 1 to 4 carbon atoms, or ##STR3## wherein R.sub.3 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; and the lactams thereof when Z is R.sub.a HN(CH.sub.2).sub.n -- and each of R.sub.a and R.sub.b is hydrogen; with the proviso that when Z is .gamma.-guanidinopropyl Y is FCH.sub.2 --, F.sub.2 CH-- or F.sub.3 C-- and R.sub.1 is hydroxy; and pharmaceutically acceptable salts and individual optical isomers thereof.
一种治疗
银屑病的新方法,包括给予以下一般结构的
α-氨基酸的卤甲基衍
生物:##STR1## 其中Y是FCH.sub.2 --,F.sub.2 CH--,F.sub.3 C--,ClCH.sub.2 --,Cl.sub.2 CH--; Z是γ-
胍基丙基或R.sub.a HN(CH.sub.2).sub.n --,其中n为整数3或4;R.sub.a和R.sub.b中的每一个可以相同也可以不同,是氢、烷基羰基,其中烷基部分具有1至4个碳原子并且是直链或支链,烷氧基羰基,其中烷氧基部分具有1至4个碳原子并且是直链或支链,或##STR2## 其中R.sub.2是氢,1至4个碳原子的直链或支链低烷基,苯甲基或对羟基苯甲基;R.sub.1是羟基;1至8个碳原子的直链或支链烷氧基,--NR.sub.4 R.sub.5,其中R.sub.4和R.sub.5中的每一个是氢或1至4个碳原子的低烷基,或##STR3## 其中R.sub.3是氢,1至4个碳原子的直链或支链低烷基,苯甲基或对羟基苯甲基;以及当Z为R.sub.a HN(CH.sub.2).sub.n --且R.sub.a和R.sub.b中的每一个是氢时的内酰胺;但是,当Z为γ-
胍基丙基,Y为FCH.sub.2 --,F.sub.2 CH--或F.sub.3 C--,且R.sub.1为羟基时,具有药学上可接受的盐和个别光学异构体。