设计了一系列新的1 H-吡唑并[3,4- d ]嘧啶-4(5H)-one衍生物5,并通过串联的aza-Wittig反应进行区域选择性合成。制备的所有化合物的结构均已通过1 H NMR,IR,EI-MS光谱和元素分析确认。初步生物测定的结果表明,大多数化合物5在50 mg / L的浓度下均对灰葡萄孢菌和稻瘟病菌具有抑制作用。
Synthesis and herbicidal activity of novel pyrazolo[3,4-d]pyrimidin-4-one derivatives containing aryloxyphenoxypropionate moieties
作者:Hui Liu、Hong-Qing Wang、Zhao-Jie Liu
DOI:10.1016/j.bmcl.2007.01.083
日期:2007.4
The 6-(4-alkoxycarbonylalkoxy)phenoxy-3-alkylthio(alkylsulfonyl)-1-phenyl-5-(substitu ted phenyl)pyrazolo[3,4-d]pyrimidin-4-ones 6 and 7 have been synthesized via the tandemaza-Wittig and annulation reactions of the corresponding iminophosphoranes 4, aromatic isocyanates, and substituted phenols 2 in 52-98% yields. Their structures were clearly verified by spectroscopic data (IR, (1)H NMR, (13)C NMR
VERSATILE SYNTHESIS AND FUNGICIDAL ACTIVITIES OF 6-AMINO-3- ALKYLTHIO-1,5-DIHYDRO-1-PHENYL-PYRAZOLO [3,4-<i>D</i>]PYRIMIDIN-4-ONE DERIVATIVES
作者:Hong-Qing Wang、Zhao-Jie Liu、Ming-Wu Ding
DOI:10.1080/10426500490474897
日期:2004.10.1
A series of new 6-alkylamino-3-alkylthio-1-phenyl-1H-pyrazolo[3,4-d] pyrimidin-4(5H)-onederivatives 5 and 6 have been rapidly synthesized by a novel solution-phase regioselective synthetic method. Treatment of pyrazole o-aminoester 1 with dibromotriphenylphosphorane gave iminophosphorane 2, which underwent a aza-Wittig reaction with phenyl ioscyanate to provide the carbodiimide 3. The latter intermediate
Synthesis and Antifungal Activities of Novel 5-Amino-6-arylamino- 1<i>H</i>-pyrazolo[3,4-<i>d</i>]pyrimidin-4(5<i>H</i>)-one Derivatives
作者:Hong-Qing Wang、Wei-Pimg Zhou、Yu-Yuan Wang、Can-Rong Lin
DOI:10.1021/jf801359f
日期:2008.8.1
A novel approach was developed to regioselectively synthesize new 5-amino-6-arylamino-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one 5 derivatives via a tandem aza-Wittig and annulation reactions of iminophosphorane 2, aromatic isocyanates, and hydrazine in 52-92% isolated yields. The compounds 5 reacted with triethyl orthoformate to give 1,8-2H-pyrazolo[3,4-d][1,2,4]triazolo[1,5-a]pyrimidin-4-ones 6 in good
The 6-(4-alkoxycarbonylalkoxy)phenoxy-3-alkylthio-5-(fluoro-substituted)phenyl-l-phenylpyrazolo[3,4-d]pyrimidin-4-ones 6 have been successfully synthesized via a tandem aza-Wittig and annulation reactions of the corresponding iminophosphorances 4, aromatic isocyanate, and substituted phenols 2 in 59-69% isolated yields using actonitrile as solvent. These novel compounds 6 could be oxidized to sulfones 7 by hydrogen peroxide in satisfactory yields (57-93%). Their structures were clearly verified by spectroscopic data (IR, H-1 NMR, C-13 NMR, MS, Elemental analysis or X-ray diffraction crystallography). The results of preliminary bioassay indicated that these compounds possess herbicidal activity against the root of rape and barnyard grass. (c) 2006 Elsevier B.V. All rights reserved.
Regioselective synthesis and bioactivity of new 5-amino-6-arylamino-pyrazolo[3,4-<i>d</i>]-pyrimidin-4(5<i>H</i>)-one derivatives
作者:Hong-Qing Wang、Wei-Ping Zhou、Yu-Yuan Wang、Can-Rong Lin、Zhao-Jie Liu
DOI:10.1002/jhet.26
日期:2009.3
A novel approach to regioselectivesynthesis of new 5-amino-6-arylamino-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-onederivatives via a tandem aza-wittig and annulation reaction of iminophosphorance , aromatic isocyanates and hydrazine in 69.6–94.7% isolated yields is reported. The compound reacted with triethyl orthoformate to give compound in good yield (65.8–82.8%). Their structure was clearly confirmed
一种新的5-氨基-6-芳基氨基-1 H-吡唑并[3,4- d ]嘧啶-4(5 H)-一的区域选择性合成的新方法衍生物经由串联氮杂维悌希和环反应iminophosphorance的,芳族异氰酸酯和肼的分离产率为69.6–94.7%。化合物 与原甲酸三乙酯反应生成化合物 产量高(65.8–82.8%)。光谱数据(IR,1 H NMR,MS,元素分析)清楚地确认了其结构,初步生物测定结果表明该化合物 和 对灰葡萄孢和菌核盘菌具有较高的抗真菌活性,浓度为50 mg / L时,对灰葡萄孢,稻瘟病菌和核盘菌的抑制率分别为100、96.4和90.2%。化合物的抗真菌活性 通常高于复合材料的 。J.杂环化学,(2009)。