The synthesis of ω-(2-aryl-1,3-dioxolan-2-yl)alkyl purine derivatives and their activity towards HIV reverse transcriptase
摘要:
Novel derivatives of 6-substituted purines were synthesized by alkylation of 6-substituted purines with various 2 -(chloroalkyl)-2 -aryl-1,3-dioxolanes and related compounds. Their inhibitory properties toward HIV reverse transcriptase were studied. The structure-activity relationship within the synthesized compounds was found.
Magnesium bromide promoted Barbier-type intramolecular cyclization of halo-substituted acetals, ketals, and orthoesters
作者:Jui-Wen Huang、Chiar-Dy Chen、Man-kit Leung
DOI:10.1016/s0040-4039(99)01813-4
日期:1999.12
Although acetals, ketals and orthoesters are commonly used as protective groups against organometallic reagents, Grignard reagents derived from halo-acetals, ketals, or orthoesters cyclize intramolecularly under MgBr2 promoted conditions, giving rise to the corresponding cycloalkanol and cycloalkanone derivatives. Our results also suggest a Lewis acid catalyzed push-pull mechanism operating for the
Cationic Palladium Complex Catalyzed Highly Enantioselective Intramolecular Addition of Arylboronic Acids to Ketones. A Convenient Synthesis of Optically Active Cycloalkanols
作者:Guixia Liu、Xiyan Lu
DOI:10.1021/ja0672425
日期:2006.12.1
An efficient and convenient synthesis of opticallyactive cycloalkanols by utilizing the chiral cationic palladium complex as the catalyst was achieved in mild conditions with high yield and high enantioselectivity.
Derivatives of substituted N-alkylimidazoles, their preparation and pharmaceutical compositions containing them
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0049565A2
公开(公告)日:1982-04-14
Compounds useful as anticonvulsant agents, antifungals and antibacterials are represented by the formula
wherein R1 is phenyl optionally substituted by one or more substituents selected from the group consisting of halo, lower alkyl of one to four carbon atoms, lower alkoxy of one to four carbon atoms and trifluoromethyl; Z is ethylene or propylene optionally substituted by one or more lower alkyl groups of one to four carbon atoms; m is 1, 2, 3 or 4 and n is 0, 1, 2, or 3 with the proviso that the sum of m and n is 2, 3 or 4; and the pharmaceutically acceptable acid addition salts thereof.
The ketone intermediates useful in preparing compounds of formula (I) also have anticonvulsant activity.