Synthesis of variously 9,9-dialkylated octahydropyrimido [3,4-a]-s-triazines with potential antifungal activity
摘要:
9,9-Dialkyloctahydropyrimido[3,4-a]-s-triazines were synthesized by iminodimethylation reaction between a 5,5-dialkyl-6-aminopyrimidine-2,4(3H,5H)-dione, a substituted aniline and two moles of formaldehyde. The synthesis of 5,5-dialkyl-6-aminopyrimidinedione consisted of the condensation of urea with ethyl 2,2-dialkylcyanoacetates. 18 Octahydropyrimido[3,4-a]-s-triazines were synthesized and compounds resulting from a supplementary aminomethylation were also obtained. Most of these compounds were tested for antifungal activity in vitro. Only 9,9-dibutyl-6,8-dioxo-3(2-chlorophenyl)2,3,4,5,6,7,8,9-octahydropyrimido[3,4-a]s-triazine showed some activity against Microsporum canis. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
Heilmittelchemische Studien in der heterocyclischen Reihe. 11. Mitteilung. 4,4-Disubstituierte Derivate der Pyrazolreihe
作者:J. Druey、P. Schmidt
DOI:10.1002/hlca.19540370629
日期:——
By alkylation of the pyrazole derivatives obtained from disubstituted cyano-acetic acid esters and hydrazine (formula 1) a series of 1-alkyl-3-amino-4,4-disubstituted-5-oxo-pyrazolines (7) was obtained. These were further alkylated to 1,2-dialkyl derivatives (8). From the compounds 1 the 5-halogenated iminopyrazolines 9 were obtained with POCl3 or PBr5. The 4-methyl-4-n-butyl-5-bromo derivative of
通过对由二取代的氰基乙酸酯和肼获得的吡唑衍生物进行烷基化(式1),获得了一系列的1-烷基-3-氨基-4,4-二取代的5-氧代-吡唑啉(7)。将它们进一步烷基化为1,2-二烷基衍生物(8)。从化合物1获得带有POCl 3或PBr 5的5-卤代亚氨基吡唑啉9。该系列的4-甲基-4-正丁基-5-溴衍生物具有重要的镇静作用。与Pd / H 2催化脱卤得到3-亚氨基-4,4-二烷基吡唑啉10。研究了不同类型化合物的酰化作用。
The 1,2-Dibenzoylcyclobutanes
作者:Ellsworth Ellingboe、Reynold C. Fuson
DOI:10.1021/ja01323a037
日期:1934.8
A convenient new procedure for the construction of highly substituted acetates. Reductive alkylation of α-cyano esters
作者:Kak-Shan Shia、Nien-Yin Chang、Judy Yip、Hsing-Jang Liu
DOI:10.1016/s0040-4039(97)10063-6
日期:1997.11
A convenient, highly efficient general method for the preparation of highly substituted acetates has been developed, making use of reductive alkylation of alpha-cyano esters as a key operation. (C) 1997 Elsevier Science Ltd.
Boothe; Wilson, Journal of the American Chemical Society, 1946, vol. 68, p. 449