(2-chloro-2-nitroethenyl)benzenes as synthons: a general method for the preparation of 2,3-dihydro- 2-nitro-3-phenyl-4H-furo [3,2-c] [1]benzopyran-4-ones and 3-phenyl-4H-furo[3,2-c][1]benzopyran-4-ones
cell surface aminopeptidase N (APN/CD13), overexpressed in tumor cells, plays a critical role in angiogenesis. However, potent, selective, and, particularly, noncytotoxic inhibitors ot this protein are lacking, and the present work was undertaken with the aim of developing a new generation of noncytotoxic inhibitors that bind to APN/CD13. In this context, we have synthesized a series of novel flavone-8-acetic
the dual electrophilic properties of (2-chloro-2-nitroethenyl)benzenes in a one-pot, formal [3+2] cycloaddition. Using a base (DBU), the desired trisubstituted heterocycles were formed rapidly (10–30 min) in good to excellent yields (51–92 %), and this versatile, metal-free methodology was applied to the synthesis of 2-acyl- and 2-carboalkoxyfurans and furan-2-carboxamides. Additionally, by using 2-ketophosphonate
leading to the title products as single diastereomers with enantiomeric excesses from 86% up to 97%. Alkyl 4,5-dihydrofuran-2-carboxylates can be efficiently obtained via an enantioselective organocatalyzed consecutive reaction between α-keto esters and (Z)-(2-chloro-2-nitroethenyl)benzenes. The overall sequence combines a (R,R)-TUC-catalyzed Michael addition with a DABCO-promoted intramolecular O-alkylation
Synthesis and Biological Evaluation of 5-Arylfuro(2,3-d)pyrimidines as Novel Dihydrofolate Reductase Inhibitors.
作者:Farid WAHID、Claude MONNERET、Daniel DAUZONNE
DOI:10.1248/cpb.47.156
日期:——
A series of about fifty novel 5-arylfuro[2,3-d]pyrimidine derivatives were synthesized as potential inhibitors of dihydrofolatereductase (DHFR) arising from different species. Weak enzyme inhibition was observed for most of the compounds, with only a few reaching IC50 values less than 30 microM. With regards to antibacterial and anti-malarial potency, only seven compounds showed a modest in vitro
A convenient procedure for the preparation of 5,6-dihydro-6-nitro-5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones and 5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones
作者:Daniel Dauzonne、Anne Adam-Launay
DOI:10.1016/s0040-4020(01)92249-5
日期:1992.4
Z-(2-chloro-2-nitroethenyl)benzenes with 4,6-dihydroxypyrimidine provides 5,6-dihydro-6-nitro-5-phenylfuro[2,3-d]pyrimidin-4(3H)-ones at room temperature. Involving the same starting materials, but using DBU in refluxing ethanol instead of triethylamine, the so far unknown 5-phenylfuro[2,3-d]pyrimidin-4(3H-ones are obtained
Z-(2-氯-2-硝基乙烯基)苯与4,6-二羟基嘧啶的三乙胺促进的缩合反应提供5,6-二氢-6-硝基-5-苯基呋喃[2,3-d]嘧啶-4(3 H)-在室温下一个。使用相同的起始原料,但在回流的乙醇中使用DBU代替三乙胺,获得了迄今未知的5-苯基呋喃[2,3-d]嘧啶-4(3 H -ones)