Condensation of aldehydes, unsymmetrical disubstituted hydrazines and cyanide resulted in the formation of Mannich bases which, after acylation, formed 6-acylated 3-amino-5-imino oxazolines on acid/acid anhydride treatment. Structure 3 was assigned to these mesoionic compounds on spectral evidence.
CULBERTSON, TOWNLEY P.;DOMAGALA, JOHN M.;PETERSON, PHRED;BONGERS, SHANNON+, J. HETEROCYCL. CHEM., 24,(1987) N 6, 1509-1520
作者:CULBERTSON, TOWNLEY P.、DOMAGALA, JOHN M.、PETERSON, PHRED、BONGERS, SHANNON+
DOI:——
日期:——
Direct C(sp<sup>3</sup>)–H Cyanation Enabled by a Highly Active Decatungstate Photocatalyst
作者:Kunsoon Kim、Seulchan Lee、Soon Hyeok Hong
DOI:10.1021/acs.orglett.1c01846
日期:2021.7.16
New 7-substituted quinolone antibacterial agents. The synthesis of 1-ethyl-1,4-dihydro-4-oxo-7-(2-thiazolyl and 4-thiazolyl)-3-quinolinecarboxylic acids
作者:Townley P. Culbertson、John M. Domagala、Phred Peterson、Shannon Bongers、Jeffrey B. Nichols
DOI:10.1002/jhet.5570240604
日期:1987.11
4-dihydro-4-oxo-7-(4-thiazolyl)-3-quinolinecarboxylic acids and 1-ethyl-1,4-dihydro-4-oxo-7-(2-thiazolyl)-3-quinolinecarboxylic acids were prepared. Also prepared was 10-[2-(aminomethyl)-4-thiazolyl]-9-fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid. Analogs with basic amine substituents on the thiazole moiety were found to have antibacterial activity.
一系列1-乙基-1,4-二氢-4-氧代-7-(4-噻唑基)-3-喹啉羧酸和1-乙基-1,4-二氢-4-氧代-7-(2-噻唑基制备)-3-喹啉羧酸。还制备了10- [2-(氨基甲基)-4-噻唑基] -9-氟-2,3-二氢-3-甲基-7-氧代-7 H-吡啶基[1,2,3- de ] [1 ,4]苯并恶嗪-6-羧酸。发现在噻唑部分具有碱性胺取代基的类似物具有抗菌活性。