Sildenafil (VIAGRATM), a potent and selective inhibitor of type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction
摘要:
5-(2'-Alkoxyphenyl)pyrazolo[4,3-d]pyrimidin-7-ones, and in particular our preferred compound, sildenafil (VIAGRA(TM)), discovered through a rational drug design programme, are potent and selective inhibitors of the type 5 cGMP phosphodiesterase from both rabbit platelets and human corpus cavernosum. Sildenafil is currently in the clinic for the oral treatment of male erectile dysfunction. Copyright (C) 1996 Elsevier Science Ltd
A highly efficient heterogeneous palladium-catalyzed carbonylative annulation of 2-aminobenzamides with aryl iodides leading to quinazolinones
作者:Shengyong You、Bin Huang、Tao Yan、Mingzhong Cai
DOI:10.1016/j.jorganchem.2018.09.003
日期:2018.11
The first heterogeneous carbonylative annulation of 2-aminobenzamides with aryl iodides was achieved in N,N-dimethylformamide (DMF) at 120 °C under 10 bar of carbon monoxide by using an MCM-41-immobilized bidentatephosphine palladium(II) complex [MCM-41-2P-Pd(OAc)2] as catalyst and 1,8-diazabicycloundec-7-ene (DBU) as base, yielding a wide variety of quinazolinone derivatives in good to excellent
Improved, gram-scale synthesis of sildenafil in water using arylacetic acid as the acyl source in the pyrazolo[4,3-<i>d</i>]pyrimidin-7-one ring formation
作者:Joydev K. Laha、Upma Gulati、Saima、Anjali Gupta、Harish Kumar Indurthi
DOI:10.1039/d0nj01236j
日期:——
An improved, gram-scale synthesis of the blockbuster drug sildenafil, used for the treatment of male erectile dysfunction, has been developed.
<i>ortho</i>-Naphthoquinone-catalyzed aerobic oxidation of amines to fused pyrimidin-4(3<i>H</i>)-ones: a convergent synthetic route to bouchardatine and sildenafil
作者:Kyeongha Kim、Hun Young Kim、Kyungsoo Oh
DOI:10.1039/d0ra06820a
日期:——
A facile access to fusedpyrimidin-4(3H)-one derivatives has been established by using the metal-free ortho-naphthoquinone-catalyzed aerobic cross-coupling reactions of amines. The utilization of two readily available amines allowed a direct coupling strategy to quinazolinone natural product, bouchardatine, as well as sildenafil (Viagra™) in a highly convergent manner.
通过使用无金属邻萘醌催化的胺有氧交叉偶联反应,已经建立了一种容易获得稠合 pyrimidin-4(3 H )-one 衍生物的方法。利用两种容易获得的胺,可以以高度收敛的方式直接偶联喹唑啉酮天然产物布沙达汀和西地那非 (Viagra™)。
Direct Construction of Diverse Polyheterocycles Bearing Pyrrolidinediones via Rh(III)‐Catalyzed Cascade C−H Activation/Spirocyclization
作者:Shreedhar Devkota、Ha‐Jin Lee、Sung Hong Kim、Yong Rok Lee
DOI:10.1002/adsc.201901019
日期:2019.12.17
Rh(III)‐catalyzed cascade oxidative annulation of 2‐arylquinazolinones with various maleimides to afford spiroisoindoloquinazolinones bearing pyrrolidinediones is described. Sequential ortho C−H functionalization and spirocyclization via aza‐Michael addition result in the formation of both C−C and C−N bonds in a single operation. This atom‐ and step‐economic strategy provides an efficient and novel
A general synthetic approach to pyrazolo[4,3-d]pyrimidines is reported. Aldehydes, arylideneanilines, carboxylic acids and orthoesters are used as one-carbon units for bridging the two amino functions of 4-amino-1-alkyl-3-propylpyrazole-5-carboxamides.
报道了吡唑并[4,3- d ]嘧啶的一般合成方法。醛,芳基苯胺,羧酸和原酸酯用作连接4-氨基-1-烷基-3-丙基吡唑-5-羧酰胺的两个氨基官能团的一个碳单元。