The compounds of the invention are tri-substituted pyridine intermediates, useful in the preparation of final products, wherein said final products are involved in the preparation of medicaments. Said medicaments are useful for the treatment of various diseases including psoriasis. A compound of the formula (II): ##STR1## wherein R.sup.1 is hydrogen, benzyl or a group of the formula (A): ##STR2## in which n is 1 to 20; and R.sup.5 is hydrogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy or trifluoromethyl; and R.sup.7 is a leaving group consisting of halogen, OTf or (Trifluorate, e.g. OSO.sub.2 CF.sub.3), OSO.sub.2 alkyl and OSO.sub.2 Ar wherein Ar represents optionally substituted aryl.
                            本发明的化合物是三取代
吡啶中间体,在制备最终产品中有用,其中所述最终产品涉及制备药物。所述药物用于治疗包括
银屑病在内的各种疾病。式(II)的化合物:其中R1是氢,苄基或式(A)的基团:其中n为1至20;R5是氢,C1-6烷基,C1-6烷氧基或三
氟甲基;R7是一个离去基团,包括卤素,OTf或(三
氟甲基,例如OSO2CF3),OSO2烷基和OSO2Ar,其中Ar代表可选取代的芳基。