Co-crystal Structure of 11-Hydroxy-2,3,9-trimethoxy-6H-chromeno[3,4-b]chromen-12-one and 11-Hydroxy-2,3,9-trimethoxy-chromeno[3,4-b]chromene-6,12-dione
作者:Thapong Teerawatananond、Narongsak Chaichit、Nongnuj Muangsin
DOI:10.1007/s10870-010-9702-1
日期:2010.7
A 1:1 co-crystal structure of 11-hydroxy-2,3,9-trimethoxy-6H-chromeno[3,4-b]chromen-12-one and 11-hydroxy-2,3,9-trimethoxy-chromeno[3,4-b]chromene-6,12-dione (stemonone) was crystallized from the reaction mixture of 6-deoxyclitoriacetal and methanesulfonyl chloride, and its structure was characterized by X-ray diffraction. This co-crystal crystallizes in a triclinic crystal system, space group P(−1) with unit cell parameters of a = 8.1317(3) Å, b = 9.8224(4) Å, c = 10.7268(3) Å, α = 78.116(1)°, β = 77.463(1)°, γ = 77.140(1)°, Z = 2 and V = 804.11(3) Å3. The crystal structure was solved by direct methods and refined by full-matrix least-squares on F 2 to final values of R 1 = 0.0501 and wR 2 = 0.1520. A 1:1 co-crystal structure of 11-hydroxy-2,3,9-trimethoxy-6H-chromeno[3,4-b]chromen-12-one and 11-hydroxy-2,3,9-trimethoxy-chromeno[3,4-b]chromene-6,12-dione (stemonone) is reported.
1:1共晶结构包括11-羟基-2,3,9-三甲氧基-6H-色满并[3,4-b]色烯-12-酮和11-羟基-2,3,9-三甲氧基-色满并[3,4-b]色烯-6,12-二酮(千金子素),从6-去氧阴蒂叉醚和甲磺酰氯的反应混合物中结晶出来,并通过X射线衍射进行了结构表征。该共晶属于三斜晶系,空间群为P(-1),晶胞参数为a = 8.1317(3) Å,b = 9.8224(4) Å,c = 10.7268(3) Å,α = 78.116(1)°,β = 77.463(1)°,γ = 77.140(1)°,Z = 2,V = 804.11(3) Å3。晶体结构通过直接法求解,并通过F2上的全矩阵最小二乘法精修至最终的R1 = 0.0501和wR2 = 0.1520。报告了一种11-羟基-2,3,9-三甲氧基-6H-色满并[3,4-b]色烯-12-酮和11-羟基-2,3,9-三甲氧基-色满并[3,4-b]色烯-6,12-二酮(千金子素)的1:1共晶结构。