1 7 9 2 广 西 植 物 45 卷
图 1 化合物 1-19 的结构
Fig. 1 Structures of compounds 1-19
O)ꎬ 147.3 (C ̄3ꎬ5)ꎬ 140.2 (C ̄4)ꎬ 122.7 ( C ̄1)ꎬ ( C ̄3α)ꎬ71.8 (C ̄4α)ꎬ76.6 (C ̄5α)ꎬ64.5 (C ̄6α)ꎬ
110.3 (C ̄2ꎬ6)ꎬ 93.9 ( C ̄1α)ꎬ74.2 ( C ̄2α)ꎬ75.1 98.6 (C ̄1β)ꎬ 73.8 (C ̄2β)ꎬ78.5 (C ̄3β)ꎬ73.4 (C ̄