Hydrolysis of fluoroalkyl-containing ?-aminovinyl ketones
摘要:
The kinetics of hydrolysis of fluoroalkyl-containing beta-aminovinyl ketones R1C(O)CHC(NHR3)R2, in which the substituents CF3 and HCF2CF2 are in the ketone (R1) or enamine parts of the molecule (R2), was studied. In acid (pH < 5) and alkaline (pH > 10) media, they hydrolyze with the formation of the corresponding amines and beta-diketones. In an alkaline medium, the beta-diketones undergo cleavage to fluorinated acids and methyl ketones. The rate constants of hydrolysis in an acid medium change within a range of four orders, depending on the nature of the substituents. The presence of a fluoroalkyl group at the enamine reaction center increases the hydrolysis rate. In an alkaline medium, the rate constants vary within one order.
Condensation of fluorinated 3-oxo esters or 1,3-diketones with benzaldehyde and (thio)urea results in the diastereoselective formation of 4-fluoroalkyl-4-hydroxy-2-oxo(thioxo)-6-phenyl-hexahydropyrimidine-5-carboxylates from which by dehydration under acidic conditions the corresponding 6-fluoroalkyl-2-oxo(thioxo)-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylates were obtained. Under the same conditions
Ethyl 1-trifluoromethyl-1-hydroxy-3-oxo-phosphonates, the related (methyl)phosphinates and (phenyl)phosphinates, and phosphine oxides were obtained in good yield via direct phosphonylation of acyltrifluoroacetones with diethyl phosphite, ethyl (methyl)phosphonite, ethyl (phenyl)phosphonite, and diphenylphosphine oxide in the presence of triethyl borate. The subsequent dehydration of the selected phosphonates
Condensation of fluoroalkyl-containing 1,3-dicarbonyl compounds with ethylenediamine
作者:V.I. Saloutin、Z.E. Skryabina、Y.V. Burgart
DOI:10.1016/s0022-1139(00)81181-1
日期:1992.3
interaction of fluoroalkylated 1,3-diketones with ethylenediamine hydroperchlorate; similarly, 1,2,3,4-tetrahydro-1,4-diazepine-5-ones have been obtained from fluorinated 1,3-keto esters. Under mild conditions, fluorinated copper(II) 1,3-diketonates, and copper(II) and nickel(II) N,N′-ethylenebis(aminovinyl ketonates) were found to react with ethylenediamine to form fluoroalkyl-containing N,N′-ethylenebis(aminovinyl
通过氟烷基化的1,3-二酮与乙二胺氢氯酸盐的直接相互作用制备了2,3-二氢-1 H -1,4-二氮杂pine;类似地,已经从氟化的1,3-酮酯获得了1,2,3,4-四氢-1,4-二氮杂-5-酮。在温和的条件下,发现氟化的1,3-二酮铜(II)和N(N)的铜(II)和N'-亚乙基双(氨基乙烯基酮)会与乙二胺反应生成含氟烷基的N,N' -亚乙基双(氨基乙烯基酮)和/或2,3-二氢-1 H -1,4-二氮杂s 。
INHIBITORS OF FILOVIRUS ENTRY INTO HOST CELLS
申请人:Basu Arnab
公开号:US20120189614A1
公开(公告)日:2012-07-26
Organic compounds showing the ability to inhibit viral glycoprotein (GP)-mediated entry of a filovirus into a host cell are disclosed. The disclosed filovirus entry inhibitor compounds are useful for treating, preventing, or reducing the spread of infections by filovirus including the type species Marburg virus (MARV) and Ebola virus (EBOV). Preferred inhibitors of the invention provide therapeutic agents for combating the Ivory Coast, Sudan, Zaire, Bundibugyo, and Reston Ebola virus strains.