Succinimide Derivatives. II. Synthesis and Antipsychotic Activity of N-(4-(4-(1,2-Benzisothiazol-3-yl)-1-piperazinyl)butyl)-1,2-cis-cyclohexanedicarboximide (SM-9018) and Related Compounds.
Cyclicimides bearing omega-(4-benzisothiazol-3-yl-1-piperazinyl)alkyl moieties were synthesized and tested for antipsychotic activity. The in vitro binding affinities of these compounds were examined for dopamine 2 (D2) and serotonin 2 (5-HT2) receptor sites. Structure-activity relationships within these series are discussed. One of these compounds, N-[4-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]butyl]-1
A Five-Membered Enantiopure Cyclic Nitrone from Malic Acid by Regioselective Oxidation of Cyclic Hydroxylamine. Synthesis of (1S,7S,8aR)-Octahydro-1,7-dihydroxyindolizine
作者:Stefano Cicchi、Andrea Goti、Alberto Brandi
DOI:10.1021/jo00120a016
日期:1995.7
The chiral optically pure five-membered 3-tert-butoxy-1-pyrroline N-oxide (1) was synthesized by a convenient five-step procedure from diethyl L-malate. The key step is the regioselective HgO dehydrogenation of the N-hydroxypyrrolidine 6 obtained by double-nucleophilic displacement of a (bis)mesylate with hydroxylamine. A rationalization of the observed regioselectivity of the oxidation by studying the oxidation of a deuterated N-hydroxypyrrolidine 20 is reported. Nitrone 1 has been applied to the synthesis of a new (1S,7S,8aR)-1,7-dihydroxyindolizidine (28) via 1,3-dipolar cycloaddition strategies.
SULFONIMIDAMIDE COMPOUNDS AS INHIBITORS OF INTERLEUKIN-1 ACTIVITY