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2-羟基-5-氧代-4-苯基-2,3,4,5-四氢吡喃并[3,2-c]色烯-2-羧酸乙酯

Ethyl 2-hydr-oxy-5-oxo-4-phenyl-2,3,4,5-tetra-hydro-pyrano[3,2-c]chromene-2-carboxyl-ate.

作者信息

Zhang Wei, Zhang Guangcun, Li Bailin, Wang Yifeng

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2009 Jul 25;65(Pt 8):o1969. doi: 10.1107/S1600536809028311.

DOI:10.1107/S1600536809028311
PMID:21583645
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2977402/
Abstract

The main structural unit of the title compoud, C(21)H(18)O(6), is a fused three-ring group consisting of coumarin and tetra-hydro-pyrane ring systems. Two C atoms of the tetra-hydro-pyran ring are displaced by 0.295 (3) and -0.360 (2) Å from the mean plane of coumarin ring. The dihedral angle between the phenyl and coumarin rings is 73.94 (3)°. Inter-molecular O-H⋯O hydrogen bonds are present in the crystal structure.

摘要

标题化合物C(21)H(18)O(6)的主要结构单元是一个由香豆素和四氢吡喃环系统组成的稠合三环基团。四氢吡喃环的两个C原子相对于香豆素环的平均平面位移了0.295(3)和 -0.360(2) Å。苯环和香豆素环之间的二面角为73.94(3)°。晶体结构中存在分子间O-H⋯O氢键。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f9a/2977402/32ec3b449f66/e-65-o1969-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f9a/2977402/6db401cfa96a/e-65-o1969-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f9a/2977402/32ec3b449f66/e-65-o1969-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f9a/2977402/6db401cfa96a/e-65-o1969-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f9a/2977402/32ec3b449f66/e-65-o1969-fig2.jpg

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