A transition‐metal‐free catalytic hydrodefluorination (HDF) reaction of polyfluoroarenes is described. The reaction involves direct hydride transfer from a hydrosilicate as the key intermediate, which is generated from a hydrosilane and a fluoride salt. The eliminated fluoride regenerates the hydrosilicate to complete the catalytic cycle. Dispersion‐corrected DFT calculations indicated that the HDF
描述了多氟芳烃的无过渡金属催化加氢脱氟(HDF)反应。该反应涉及从氢硅酸盐作为主要中间体的氢化物直接转移,这是由氢硅烷和氟化物盐生成的。除去的氟化物使氢硅酸盐再生,从而完成催化循环。分散校正的DFT计算表明HDF反应通过协调的亲核芳族取代(CS N Ar)过程进行。
Nonisomerizable analogs of (Z)- and (E)-4-hydroxytamoxifen. Synthesis and endocrinological properties of substituted diphenylbenzocycloheptenes
作者:Raymond McCague、Guy Leclercq、V. Craig Jordan
DOI:10.1021/jm00402a005
日期:1988.7
corresponding derivatives of tamoxifen although in the MCF-7 assay 6 was slightly less effective than 4-hydroxytamoxifen at 10(-6) and 10(-7) M. The compound 8 analogues to cis-4-hydroxytamoxifen antagonized the growth stimulation by estradiol of MCF-7 cell or rat uterus growth, and it is therefore an antiestrogen, but its potency was somewhat less, both as an antiestrogen and an estrogen, than reported
Synthesis of Z-1,1-Dichloro-2-[4-(2-dimethylaminoethoxy)phenyl]-2-(4-hydroxyphenyl)-3-phenyl Cyclopropane and Z-1,1-Dichloro-2-[4-(2-dimethylaminoethoxy)phenyl]-2-(4-chlorophenyl)-3-phenyl Cyclopropane
作者:Satendra Singh、Robert A. Magarian
DOI:10.1246/cl.1994.1821
日期:1994.10
steps in the synthesis are the preparation of the pure Z-ethene, the stereospecific addition of dichlorocarbene, amino-dehalogenation and deprotection of the phenol. Heptafluorotolyl protecting group is used in the synthesis of pure Z-ethene which is stable under basic heterogenous cyclopropanation reaction conditions.
McCague, Raymond, Journal of Chemical Research, Miniprint, 1986, # 2, p. 771 - 793
作者:McCague, Raymond
DOI:——
日期:——
Influence of the Length and Positioning of the Antiestrogenic Side Chain of Endoxifen and 4-Hydroxytamoxifen on Gene Activation and Growth of Estrogen Receptor Positive Cancer Cells
作者:Philipp Y. Maximov、Daphne J. Fernandes、Russell E. McDaniel、Cynthia B. Myers、Ramona F. Curpan、V. Craig Jordan
DOI:10.1021/jm500569h
日期:2014.6.12
Tamoxifen has biologically active metabolites: 4-hydroxytamoxifen (4OHT) and endoxifen. The E-isomers are not stable in solution as Z-isomerization occurs. We have synthesized fixed ring (FR) analogues of 4OHT and endoxifen as well as FR E and Z isomers with methoxy and ethoxy side chains. Pharmacologic properties were documented in the MCF-7 cell line, and prolactin synthesis was assessed in GH3 rat pituitary tumor cells. The FR Z-isomers of 4OHT and endoxifen were equivalent to 4OHT and endoxifen. Other test compounds used possessed partial estrogenic activity. The E-isomers of FR 4OHT and endoxifen had no estrogenic activity at therapeutic serum concentrations. None of the newly synthesized compounds were able to down-regulate ER levels. Molecular modeling demonstrated that some compounds would each create a best fit with a novel agonist conformation of the ER The results demonstrate modulation by the ER complex of cell replication or gene transcription in cancer.