The present invention relates to new benzoyl-phenyl-piperidine derivatives selected from the group consisting of: (i) 2-piperidinobenzophenones of the general formula: ##STR1## in which: R.sub.1, R.sub.2 and R.sub.3, which are identical or different, each represent an atom of hydrogen, a hydroxy group, CF.sub.3, a halogen, a lower alkyl group or a lower alkoxy group; R.sub.4 represents an atom of hydrogen, a halogen, an NO.sub.2 group, an NR'R" group [where R' and R", which are identical or different, represent an atom of hydrogen, a lower alkyl group or a CO.sub.2 R group (where R represents a lower alkyl group or a benzyl group)]; R.sub.5 and R.sub.6, which are identical or different, each represent an atom of hydrogen, a C.sub.1 -C.sub.4 -alkyl group, an OH group, a phenyl group or a benzyl group; and (ii) acid addition salts thereof. The invention also relates to the method for preparing these new derivatives and to their use in therapeutics, particularly as immunostimulant and immunoadjuvant agents.
                            本发明涉及一种新的苯甲酰基-苯基-
哌啶衍
生物,所选的衍
生物来自以下组中:(i) 通式为:##STR1## 的2-
哌啶基苯甲酮,其中:R.sub.1、R.sub.2和R.sub.3相同或不同,分别表示氢原子、羟基、CF.sub.3、卤素、低碳基或低氧基;R.sub.4表示氢原子、卤素、NO.sub.2基团、NR'R"基团[其中R'和R"相同或不同,分别表示氢原子、低碳基或CO.sub.2R基团(其中R表示低碳基或苄基)];R.sub.5和R.sub.6相同或不同,分别表示氢原子、C.sub.1-C.sub.4-烷基、羟基、苯基或苄基;以及(ii)它们的酸加成盐。本发明还涉及制备这些新衍
生物的方法及其在治疗中的应用,特别是作为免疫刺激剂和免疫佐剂剂。