Antitumor agents 287. Substituted 4-amino-2H-pyran-2-one (APO) analogs reveal a new scaffold from neo-tanshinlactone with in vitro anticancer activity
摘要:
4-Amino-2H-benzo[h] chromen-2-one (ABO) and 4-amino-7,8,9,10-tetrahydro-2H-benzo[h] chromen-2-one (ATBO) analogs were found to be significant in vitro anticancer agents in our previous research. Our continuing study has now discovered a new simplified (monocyclic rather than tricyclic) class of cytotoxic agents, 4-amino-2H-pyran-2-one (APO) analogs. By incorporating various substituents on the pyranone ring, we have established preliminary structure-activity relationships (SAR). Analogs 19, 20, 23, and 26-30 displayed significant tumor cell growth inhibitory activity in vitro. The most active compound 27 exhibited ED50 values of 0.059-0.090 mu M. (C) 2011 Elsevier Ltd. All rights reserved.
Pd/Pivalic Acid Mediated Direct Arylation of 2-Pyrones and Related Heterocycles
作者:Leticia M. Pardo、Aisling M. Prendergast、Marie-T. Nolan、Eoin Ó Muimhneacháin、Gerard P. McGlacken
DOI:10.1002/ejoc.201500262
日期:2015.6
Directarylation represents a favourable alternative to traditional cross-coupling reactions and has found widespread use with simple aryls and robust heterocycles. Herein a directarylation protocol has been optimised and applied to more delicate, privileged biological motifs. The intramolecular directarylation of 2-pyrones, 2-coumarins, 2-pyridones and 2-quinolones occurs in very good to excellent
Synthesis of 6-Substituted 4-Hydroxy-2-pyrones from Aldehydes by Addition of an Acetoacetate Equivalent, Dess-Martin Oxidation and Subsequent Cyclization
作者:Thorsten Bach、Stefan Kirsch
DOI:10.1055/s-2001-18759
日期:——
A three step procedure for the synthesis of 6-substituted 4-hydroxy-2-pyrones 2 from aldehydes 1 is described. An acetoacetate equivalent 3 was added to the corresponding aldehyde (10 examples) in a vinylogous Mukaiyama aldol addition (72-99%). The intermediate alcohols 4 were oxidized to the ketones 5 using the Dess-Martin method (67%-quant.). A final thermal cyclization of compounds 5 yielded the title compounds 2 (61-92%; 40-85% overall).
[EN] PYRAN-2-ONES AND 5,6-DIHYDROPYRAN-2-ONES USEFUL FOR TREATING HIV AND OTHER RETROVIRUSES<br/>[FR] PYRAN-2-ONES ET 5,6-DIHYDROPYRAN-2-ONES UTILISEES DANS LE TRAITEMENT DU VIH ET D'AUTRES RETROVIRUS
申请人:THE UPJOHN COMPANY
公开号:WO1994011361A1
公开(公告)日:1994-05-26
(EN) The present invention relates to compounds of formula (I) which are pyran-2-ones and 5,6-dihydropyran-2-ones useful for inhibiting a retrovirus in a mammalian cell infected with said retrovirus.(FR) La présente invention se rapporte aux composés de la formule (I) qui sont des pyran-2-ones et des 5,6-dihydropyran-2-ones utilisées pour inhiber un rétrovirus dans une cellule de mammifère infectée par ledit rétrovirus.
AMINOMETHYLENE DERIVATIVES AND ULTRAVIOLET ABSORBER COMPRISING THE SAME
申请人:CHEMIPRO KASEI KAISHA, LIMITED
公开号:EP0950655A1
公开(公告)日:1999-10-20
The present invention provides an aminomethylene derivative represented by general formula (I):
wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e):
wherein R1, R2, R3, R4 and R5 each independently represent H, an alkyl group or the like; R6, R7 and R8 each independently represent an alkyl group or the like; R1 and R2 or R7 and R8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.