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ABSTRACT Two novel series of phosphorus-substituted 3,5-bis(arylidene)piperid-4-ones bearing 1,3,2-oxazaphosphorinane cycle either directly attached to the piperidone core through the PN bond (diamidophosphates 4) or connected with it via thiocarbamoyl linker (thioureas 5) were obtained by the phosphorylation of NH precursors with 2-oxo-1,3,2-oxazaphosphorinane chloride or the reaction of the former ones with the corresponding cyclic isothiocyanate. According to the results of cytotoxicity screening against human carcinoma cell lines (A549, CaOv3, KB), thioureas 5 were more active than the diamidophosphates 4 bearing the same arylidene rings, with compounds with electron-withdrawing side groups displaying IC50 in the micromolar range of 1.2-7 μM. © 2013 Wiley Periodicals, Inc. Heteroatom Chem 24:191-199, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/hc.21082 [ABSTRACT FROM AUTHOR]

New activated indolylpyrrolidones—their methylthiopyrrolinium salts—in the reactions with several CH‐acids were studied. 2‐Nitromethylene‐ and 2‐dicyanomethyleneindolylpyrrolidines were obtained from 5‐indolyl‐2‐methylthiopyrrolinium salts with good yields. The reduction in these nitro compounds yields the respective aminomethylpyrolidines. The rigid structure of the starting compounds has significant stereoelectronic requirements of nucleophilic agents. [ABSTRACT FROM AUTHOR]