Pyrones. IX. Synthetic approaches to the fungal metabolite phacidin and its derivatives
作者:Gerald Arthur Poulton、Terry Donald Cyr
DOI:10.1139/v82-405
日期:1982.11.15
e) and two related compounds is reported. Phacidin has been prepared in four steps from the readily available triacetic acid lactone (4-hydroxy-6-methyl-2H-pyran-2-one), while the decarbonylated derivative 2 and the bromo compound 3 have been synthesized utilizing a route based upon the condensation of the dianion of ethyl acetoacetate with a substituted 1,3-dithiane-2-carboxaldehyde.
α-Pyrone polyphenols, phelligridins C and D (meshimakobnols B and A), and phellifuropyranone A, isolated from a Japanese mushroom, are growth inhibitors of cancer cells. Herein, we report full deta...
α-吡喃酮多酚、草甘膦 C 和 D(meshimakobnols B 和 A),以及从日本蘑菇中分离出来的 phellifuropyranone A 是癌细胞的生长抑制剂。在这里,我们报告完整的细节...
η<sup>1</sup>-Bound 2-Pyrone Complexes of Molybdenum and Iron: A Synthetic and Structural Study
作者:Ian J. S. Fairlamb、Jason M. Lynam、Ian E. Taylor、Adrian C. Whitwood
DOI:10.1021/om049523w
日期:2004.10.1
4-methoxy-6-methyl-2-pyrone or 3-bromo-4-methoxy-6-methyl-2-pyrone result in formation of and respectively. Whereas the orientations of the pyrone ligands in the molybdenum and iron complexes containing the brominated 2-pyrone ligands are identical, the iron complex containing the 4-methoxy-6-methyl-2-pyrone contains three cations in the asymmetric unit, two of which have the 2-pyrone ligand perpendicular to the
所述的氧化裂解[沫(CO)3(η 5 -C 5 H ^ 5)] 2与的AgBF 4在4-甲氧基-6-甲基-2-吡喃酮的存在或3-溴-4-甲氧基-6-甲基-2-吡喃酮分别形成和。X射线单晶衍射研究表明,2-吡喃酮配体的取向在两种配合物中均发生显着变化。在4-甲氧基-6-甲基-2-吡喃酮络合物的情况下,吡喃酮单元平行于Mo-CO轴,而溴取代的吡喃酮则处于垂直方向。类似地,反应的[Fe(CO)2(η 5 -C 5 H ^ 5)]在4-甲氧基-6-甲基-2-吡喃酮或3-溴-4-甲氧基-6-甲基-2-吡喃酮的存在下,用AgBF 4与2进行的反应分别形成α-和β- 。钼和含溴化2-吡喃酮配体的铁络合物中吡喃酮配体的取向相同,而含4-甲氧基-6-甲基-2-吡喃酮的铁络合物的不对称单元中包含三个阳离子,其中两个具有垂直于Cp(质心)-Fe轴的2-吡喃酮配体,而第三个单元是平行的。这些阳离子的2-吡喃酮配体
Reduction of Pyrones with Complex Metal Hydrides
作者:Kiyoyuki Yamada
DOI:10.1246/bcsj.35.1329
日期:1962.8
Reduction using complex metalhydrides was carried out on monocyclic α-pyrones and benzo-γ-pyrone. It was established that generally the hydrogenolysis of the 1,6-linkage of an α-pyrone ring occurred. In benzo-γ-pyrone, carbon-carbon double bond and ketone were reduced. The effects of the substituents on the reactivity of α-pyrone were discussed.