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从国产沉香中分离得到一种新的倍半萜化合物-呋喃白木香醛,经氧化后变为呋喃白木香酸,分子式为C_(15)H_(24)O_3。晶体属单斜晶系,空间群P2_1,a=9.240(2),b=14.545(2),c=11.254(2)A,β=109.89(2)°,Z=4,计算密度为1.180g/cm~3。在Enraf-NoniusCAD4四圆衍射仪上收集衍射强度数据,用直接法解结构,选用SHELX-76程序库中的最小二乘法程序修正结构,对于全部2178个衍射,偏离因子R为0.056。
A new sesquiterpenoid compound, furanal, was isolated from domestic incense, and was oxidized to furanalwood acid with the molecular formula of C_ (15) H_ (24) O_3. The crystal is monoclinic with space group P2_1, a = 9.240 (2), b = 14.545 (2), c = 11.254 (2) A, β = 109.89 (2) °, Z = 4 and the calculated density is 1.180 g / cm ~ 3. Diffraction intensity data were collected on an Enraf-NoniusCAD4 four-circular diffractometer, the structure was solved directly, and the structure was modified using the least-squares procedure in the SHELX-76 library, with a deviation factor R of 0.056 for all 2178 diffractions.