Pöllmann K, Gagel S, Elgamal M H, Shaker K H, Seifert K
University of Bayreuth, Germany.
Phytochemistry. 1997 Feb;44(3):485-9. doi: 10.1016/s0031-9422(96)00552-3.
Two new triterpenoid saponins, 3-O-[beta-D-2-O-sulphonylglucopyranosyl]-quinovic acid-28-O-[beta-D-glucopyranosyl] ester (zygophyloside G), 3-O-[alpha-L-arabinopyranosyl-(1-->2)-beta-D-quinovopyranosyl++ +]-quinovic acid-28-28-O-[beta-D-glucopyranosyl] ester (zygophyloside H), and seven known saponins have been isolated. The structures were established primarily on the basis of NMR spectroscopy. The assignment of all NMR signals was performed by means of 1H-1H COSY-45, NOESY, TOCSY, 13C APT, HMQC and HMBC experiments. The determination of the glycosylation sites was possible by the HMBC experiments.
已分离出两种新的三萜皂苷，即3 - O - [β - D - 2 - O - 磺酰基吡喃葡萄糖基] - 奎诺酸 - 28 - O - [β - D - 吡喃葡萄糖基]酯（霸王皂苷G）、3 - O - [α - L - 阿拉伯吡喃糖基 - (1→2) - β - D - 奎诺吡喃糖基] - 奎诺酸 - 28 - 28 - O - [β - D - 吡喃葡萄糖基]酯（霸王皂苷H）以及七种已知皂苷。其结构主要基于核磁共振光谱确定。所有核磁共振信号的归属通过1H - 1H COSY - 45、NOESY、TOCSY、13C APT、HMQC和HMBC实验完成。通过HMBC实验确定了糖基化位点。
