Nickel-Catalyzed Domino Reaction of α-Aryloxyacetonitriles with Arylboronic Acids: Synthesis of 2-Aroylbenzo[<i>b</i>]furans
作者:Subhashini V. Subramaniam、Vijaya Kumaran Dharmalingam、Anwesha Bhattacharya、Saravanan Peruncheralathan
DOI:10.1021/acs.orglett.3c03241
日期:2023.11.24
We disclose the first catalytic domino reaction of α-(2-formylaryloxy)acetonitriles with arylboronic acids, yielding a range of 2-aroylbenzo[b]furans with yields of up to 93%. Ni(acac)2 serves as an effective dual catalyst. The protocol is also applicable to α-(2-acetylphenoxy)acetonitrile, giving rise to 3-methyl-2-aroylbenzo[b]furans. This domino process is efficient, additive-free, and compatible
我们公开了 α-(2-甲酰基芳氧基)乙腈与芳基硼酸的首次催化多米诺反应,产生一系列 2-芳酰基苯并[ b ]呋喃,产率高达 93%。Ni(acac) 2是一种有效的双催化剂。该方案也适用于 α-(2-乙酰基苯氧基)乙腈,产生 3-甲基-2-芳酰基苯并[ b ]呋喃。该多米诺骨牌工艺高效、无添加剂,并且与多种芳基硼酸相容,包括带有CF 3、NO 2、CN 和CO 2 Me 基团的芳基硼酸。机理研究强调了镍催化剂促进的双重活化。
Potent CYP19 (Aromatase) 1-[(Benzofuran-2-yl)(phenylmethyl)pyridine, -imidazole, and -triazole Inhibitors: Synthesis and Biological Evaluation
作者:Mohammed Reza Saberi、Tai Ky Vinh、Sook Wah Yee、B. J. Nathan Griffiths、Peter J. Evans、Claire Simons
DOI:10.1021/jm0508282
日期:2006.2.1
The synthesis of a series of novel 1-[(benzofuran-2-yl)phenylmethyl]-pyridine, -imidazole, and -triazole derivatives is described. All the compounds were evaluated in vitro for inhibitory activity against aromatase (P450(AROM), CYP19), using human placental microsomes. The 6-methoxy- and 6-hydroxy-substituted benzofuran derivatives were shown to be potent CYP19 inhibitors (IC50 = 0.01-1.46 mu M) with activity greater than that observed for the unsubstituted parent compounds and inhibitory activity comparable with or greater than the reference compound arimidex (IC50 = 0.6 mu M). Six of the benzofuran derivatives were subjected to in vitro cytotoxicity assays, using rat liver hepatocytes with cytotoxicity determined from alteration in cell morphology and lactate dehydrogenase enzyme retention over a period of 24 h, and selectivity (CYP17, 17 beta-HSD types 1 and 3, CYP24, and CYP26) determination; negligible inhibitory activity was observed, suggesting a good selectivity for CYP19. The pyridine benzofuran 4a containing the 4-fluorophenyl group was the most promising (IC50 = 44 nM; LC50 > 100 mu M) compared with arimidex (IC50 = 600 nM; LC50 > 200 mu M).