( Z )-2-bromo-3-phenylprop-2-en-1-ols/3-phenylprop-2-yn-1-ols的级联亲核攻击/加成环化反应合成恶唑烷-2-亚胺的两种简明策略已经开发了没有过渡金属催化剂的二苯基碳二亚胺。该反应表现出良好的底物适用性,以中等至优异的收率合成了多种取代的( Z )-4-(( Z )-亚苄基) -N ,3-二苯恶唑烷-2-亚胺,具有良好的立体选择性。该报告还提供了一种方便的策略来合成 3-phenylprop-2-yn-1-ols ( Z)-2-bromo-3-phenylprop-2-en-1-ols。经济实用的方法为恶唑烷-2-亚胺的潜在工业合成提供了很大的优势。
Rhodium(<scp>i</scp>)-catalyzed Pauson–Khand-type reaction using formic acid as a CO surrogate: an alternative approach for indirect CO<sub>2</sub> utilization
作者:Xian-Dong Lang、Fei You、Xing He、Yi-Chen Yu、Liang-Nian He
DOI:10.1039/c8gc03933j
日期:——
(PK-type) reaction of various substituted 1,6-enynes to afford bicyclic cyclopentenones in moderate to good yields. High TON value of up to 263 and good results in the gram-scale experiment were also obtained, demonstrating the efficacy of this methodology. In addition, heterocyclic molecules of pharmaceutical importance were also furnished via inter- or intra-molecular hetero-PK-type reactions, further
catalysis strategy for substituted 3-aminofurans synthesis has been developed. This transformation involves a tandem reaction sequence through aza-vinyl-rhodium(II) carbene O–H bond insertion, thermal propargyl-Claisen rearrangement and gold(I)-catalyzed intramolecular cyclization. More importantly, the current strategy employs simple feedstocks as starting materials, providing substituted 3-aminofurans in
The present invention relates generally to compositions and methods for treating cancer and neoplastic disease. Provided herein are substituted pyrrolopyridine derivative compounds and pharmaceutical compositions comprising said compounds. The subject compounds and compositions are useful for inhibition of histone demethylase. Furthermore, the subject compounds and compositions are useful for the treatment of cancer, such as prostate cancer, breast cancer, bladder cancer, lung cancer and/or melanoma and the like.
Benzannulation of Substituted 3-Alkoxycarbonylhex-3-en-5-ynoic Acids: A New Route to 4-Substituted 3,5-Dihydroxybenzoic Acids Derivatives
作者:Stefano Serra、Claudio Fuganti
DOI:10.1055/s-2002-34212
日期:——
A new regioselective pathway to 4-substituted 3,5-dihydroxybenzoic acids derivatives is described here. According to this procedure substituted propargylic aldehydes are converted into substituted 3-alkoxycarbonylhex-3-en-5-ynoic acids, which are in turn, treated with acetic anhydride in the presence of sodium acetate to give the substituted benzoic acids derivatives. The aromatic moiety constructed
A unique approach to biaryls was developed on the basis of propargyl vinyl ethers and dienophiles substrates via a gold(I)-initiated cycloisomerization/Diels–Alder/retro-Diels–Alder cascade reaction. The scope and mechanism of the reaction were investigated on the basis of a series of synthetic substrates, control experiments, and DFT calculations.