Synthesis, Structure, and <i>In Vitro</i> Anti-HIV Activity of New Pyrazole, 1,2,4-Thiadiazole, and 1,2,4-Triazole Derivatives
作者:Y. A. Al-Soud
DOI:10.1080/10426500801968003
日期:2008.9.15
α,α′-Dichloroazo compounds 6 react with Lewis acid to furnish 1-(chloroalkyl)-1-aza-2-azoniaallene salts 4. The cations 4 react with acetylenes, isothiocyanates, isocyanates, and carbodiimides under [3+2]-cycloaddition. The cycloadducts undergo consecutive reactions, e.g., [1,2]-shifts of alkyl groups. The newly synthesized products were evaluated for their anti-HIV-1 and anti-HIV-2 activity in MT-4
Photoinduced Electron Transfer Reactions of 3,3-Dialkylated 4,5-Diphenyl-3H-Pyrazoles: A New Route to the Formation of the Solvent Adducts
作者:Yao-Pin Yen、Tseng-Min Huang、Yu-Ping Tseng、Hsuan-Yu Lin、Ching-Cheng Lai
DOI:10.1002/jccs.200400061
日期:2004.4
3,3-Dialkyl-4,5-diphenyl-3H-pyrazoles undergo readily photoinducedelectrontransfer (PET) reaction with 2,4,6-triphenylpyrylium tetrafluoroborate (TPP + ) in acetonitrile to produce cyclopropenes and 2H-pyrroles. During prolonged irradiation, the new ring-closure products derived from 2H-pyrroles as the secondary photoproducts are also produced. However, the corresponding ester analog exhibits different