Spirolactone of Xanthene. II. Synthesis and Molecular Structure of 2′,5,7′-Trichlorospiro[benzofuran-3(2<i>H</i>),9′-[9<i>H</i>]xanthen]-2-one
作者:Michio Kimura
DOI:10.1246/bcsj.58.905
日期:1985.3
The title compound has been synthesized by the novel condensation reaction of p-chlorophenol with oxalic and sulfuric acids; its crystal and molecular structures have been determined by the single crystal X-ray diffraction method. The space group is C2/c. There are eight molecules of the title compound in the unit cell of dimensions a=21.316(9), b=17.267(4), c=9.158(6) Å, and β=94.05(5)°. The structure was solved by the direct method and refined by the block-diagonal least-squares method to a value of 0.088 for R using 1993 independent observed reflections with Fo>3σ(Fo). The molecule possesses three phenyl rings fused to spirolactone and the dihedral angles between the phenyl rings are 73.60°, 83.60°, and 22.81°.
通过对氯苯酚与草酸和硫酸的新型缩合反应合成了标题化合物;通过单晶X射线衍射法测定了其晶体和分子结构。空间群是C2/c。晶胞中存在八个标题化合物分子,尺寸为 a=21.316(9)、b=17.267(4)、c=9.158(6) Å 和 β=94.05(5)°。该结构通过直接法求解,并使用 1993 年独立观察到的 Fo>3σ(Fo) 反射,通过块对角最小二乘法将 R 值细化为 0.088。该分子具有与螺内酯稠合的三个苯环,苯环之间的二面角为73.60°、83.60°和22.81°。
Kimura, Michio; Okabayashi, Ichizo, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 9, p. 3357 - 3359
作者:Kimura, Michio、Okabayashi, Ichizo
DOI:——
日期:——
KIMURA, MICHIO;OKABAYASHI, ICHIZO, CHEM. AND PHARM. BULL., 1983, 31, N 9, 3357-3359
作者:KIMURA, MICHIO、OKABAYASHI, ICHIZO
DOI:——
日期:——
KIMURA MICHIO; OKABAYASHI ICHIZO, CHEM. AND PHARM. BULL., 35,(1987) N 1, 136-141
作者:KIMURA MICHIO、 OKABAYASHI ICHIZO
DOI:——
日期:——
KIMURA MICHIO, J. HETEROCYCL. CHEM., 24,(1987) N 1, 283-288