Polycondensed nitrogen heterocycles. XXII. A new synthesis of 5,6-dihydro-7<i>H</i>-pyrazolo[1,5-<i>d</i>][1,4]benzodiazepin-6-ones
作者:G. Dattolo、G. Cirrincione、A. M. Almerico、I. D'Asdia、E. Aiello
DOI:10.1002/jhet.5570190553
日期:1982.9
A newsynthesis of 2-methyl-9-R'-10-R-5,6-dihydro-7H-pyrazolo[1,5-d][1,4]benzodiazepin-6-ones (4a-c) is deserved. Reaction of ethyl hydrazinoacetate hydrochloride with 1,3-diketones 1a-c gave both 3-methyl-5-(4R'-5-R-2-nitrophenyl)pyrazol-1-yl-acetate acids (2a-c) and the corresponding ethyl esters 3a-c. Reduction with the appropiate reducing agent of compounds 2a-c and 3a-c directly gave the title
2-甲基-9-R'-10-R-5,6-二氢-7 H-吡唑并[1,5- d ] [1,4]苯并二氮杂-6-6(4a-c)的新合成方法是当之无愧。肼基乙酸乙酯盐酸盐与1,3-二酮1a-c的反应得到3-甲基-5-(4R'-5-R-2-硝基苯基)吡唑-1-基乙酸盐(2a-c)乙酯3a-c。用适当的还原剂还原化合物2a-c和3a-c可直接得到标题化合物。化合物4a对家蝇显示出杀虫特性。
The synthesis of aurachin B, an antibiotic that features a C3-oxygen-substituted quinolineN-oxide nucleus bearing a farnesyl side chain at C4, was accomplished in 60% overall yield from o-nitrotoluene by a concise five-step sequence. An enantioselective synthesis of aurachin H was also achieved for the first time in only two steps from an optically active epoxy iodide.
The present invention is directed to novel compounds and pharmaceutical compositions that inhibit the binding of the SDF-1 chemokine to the chemokine receptor CXCR4 and/or the binding of the SDF-1 or I-TAC chemokines to the chemokine receptor CCXCKR2 (CXCR7). These compounds are useful in preventing tumor cell proliferation, tumor formation, metastasis, inflammatory diseases, treatment of HIV infectivity, treatment of stem cell differentiation and mobilization disorders, and ocular disorders.
antivirals. In this study, a series of sulfonylpiperazine nucleozin derivatives were designed and synthesized, and their in vitro anti-influenza activity was evaluated. Many of these compounds exhibited moderate to good anti-influenza activity against influenza A. Among these, 6d, 6g, 6h, 6i, and 6j exhibited better activity than ribavirin. 2,3-dichlorobenzene substituted analogue 6i displayed the most remarkable
Compounds of formula
wherein R¹ represents:
an optionally substituted alkyl, alkenyl, or alkynyl group ; or an optionally substituted cycloalkyl group; or an optionally substituted cycloalkenyl group ; or a group such as aryl, aralkyl, COOR³, COR³, CN, NO², NR³R⁴, OR⁵, halogen atom.
R2 represents a group such as NO², CN, R⁵, S(O)mR⁵, SO₂NR³R⁴, COOR³, COR³, CONR³R⁴, CSNR³R⁴, OR⁵, or alkyl substituted by OR⁵, or a halogen atom.
R³ and R⁴ represent H or an optionally substituted alkyl.
R⁵ represents an optionally substituted alkyl
m represents zero, 1 or 2
n represents an integer from 1 to 5
p represents zero or 1
and agriculturally acceptable salts thereof. The herbicidal composition comprising these compounds and their application to crop protection.
式的化合物
其中 R¹ 代表
任选取代的烷基、烯基或炔基;或任选取代的环烷基;或任选取代的环烯基;或芳基、芳烷基、COOR³、COR³、CN、NO²、NR³R⁴、OR⁵、卤素原子等基团。
R2 代表一个基团,如 NO²、CN、R⁵、S(O)mR⁵、SO₂NR³R⁴、COOR³、COR³、CONR³R⁴、CSNR³R⁴、OR⁵,或被 OR⁵ 取代的烷基,或卤素原子。
R³ 和 R⁴ 代表 H 或任选取代的烷基。
R⁵ 代表任选取代的烷基
m 代表零、1 或 2
n 代表 1 至 5 的整数
p 代表 0 或 1
及其农业上可接受的盐类。由这些化合物组成的除草组合物及其在作物保护中的应用。