A compound of formula (I): in which X represents O or CH
2
; R
3
and R
4
each independently represent hydrogen or C
1-6
alkyl; p represent 0 or 1; and R represents a five- or six-membered saturated or unsaturated ring selected from: formula (II), (III) and (IV); or R represents a five- or six-membered oxo-substituted unsaturated ring selected from: (V) and (VI); wherein R
1
and R
2
together represent an oxo group, or R
1
and R
2
each represent hydrogen, methoxy or ethoxy, or R
1
and R
2
together with the interjacent carbon atom represent a 1,3-dioxolane or 1,3-dioxane ring, attached via the 2 position and optionally bearing one or more methyl or ethyl groups; or a salt thereof, is suitable for the treatment of anxiety and depression.
A series of non-peptidergic antagonists of NPY have been synthesized and are comprised of piperidine and tetrahydropyridine derivatives of 4-phenyl-1,4-dihydropyridines of Formula I.
As antagonists of NPY-induced feeding behavior, these compounds are expected to act as effective anorexiant agents in promoting weight loss and treating eating disorders.
一系列 NPY 非肽能拮抗剂已经合成,它们由式 I 的 4-苯基-1,4-二氢吡啶的哌啶和四氢吡啶衍生物组成。
作为 NPY 诱导的摄食行为的拮抗剂,这些化合物有望成为促进减肥和治疗饮食失调的有效厌食剂。
Mercury(II) oxide oxidation of 2-substituted-N-hydroxypiperidine: A solution to the regiochemical problem