Synthesis of a Typical Glucuronide-Containing Saponin, 28-O-β-d-Glucopyranosyl Oleanate 3-O-β-d-Galactopyranosyl-(1→2)-[β-d-glucopyranosyl-(1→3)]-β-... - Peng, Wenjie; Han, Xiuwen; Yu, Biao (Synthesis, 2004)