Chiral sulfinates studied by optical rotation, ECD and VCD: the absolute configuration of a cruciferous phytoalexin brassicanal C
作者:Tohru Taniguchi、Kenji Monde、Koji Nakanishi、Nina Berova
DOI:10.1039/b813437e
日期:——
The optical rotation, electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) of chiral sulfinates have been studied experimentally, and analysed by density functional theory calculation, aiming at establishing a reliable and convenient methodology to determine their absolute configuration. Through the study on a model chiral sulfinate with known absolute configuration, (R)-(+)-methyl
对手性亚磺酸盐的旋光性,电子圆二色性(ECD)和振动圆二色性(VCD)进行了实验研究,并通过密度泛函理论计算进行了分析,目的是建立一种可靠,方便的方法来确定它们的绝对构型。通过对已知绝对构型的模型手性亚磺酸盐(R)-(+)-对甲苯磺酸甲基酯((R)-(+)-1)的研究,发现每种技术在分配亚磺酸盐的手性方面都是可靠的。然后,我们将这些方法应用于合成制备的十字花科植物抗毒素,芸苔素C((-)-2),并明确确定其绝对构型为S。还讨论了每种光谱对亚磺酸盐的利弊。