[化学名称] |
2-Propenoic acid, 2-methyl, ester, 3-(acetyloxy)-la, 2, 3, 5a, 7, 8, 8a, 9, 10a-decahydro-4, 10a-dimethyl-8-methylene-7-oxooxireno [5,6]cyclodeca [1,2-b] furan-9-y1 ester, [1aR*, 3S*, 4Z, 5aR*, 8aR*,9R*, 10aR*)] |
[物理性质] |
熔点210~212°(醋酸乙酯 -己烷)[2]。熔点193~196°(醋酸乙酯-己烷), [α]D-114°(C=1.5, 氯仿)。NMR (CDCl3) τ: 8.12 (d, J=2.0), C4-CH3), 8.55 (s, C10-CH3), 4.32 (d, J=2.0, C11-CH2), 3.68 (d, J=2.0, C11-CH2), 7.38 (dd, J=4, 10, H-1), 8.25, 7.33 (m, H-2), ~4.8 (H-3), ~4.8 (H-5), 3.89 (dd, J=2, 11, H-6), 7.2 (H-7), ~4.8 (H-8), ~7.2, 8.6 (dd, J=2, 15, H-9_, 7.9 (醋酸); IRνCHCl3max cm-1: 1766, 1733, 1720, 1670, 1670, 1634, 1250, 1162, UVλmax nm (ε): 208 (15300); MSm/3: 390 (M+), 330, 321, 304, 261, 244, 83, 69[1]。 |