番荔枝皮化学成分及其抗肿瘤活性的研究(3)
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参见附件。
化合物8白色粉末。ESIMS m/z 319 [M+H]+。1HNMR(CD3OD,500 MHz)δ:0.96(3H,s,H20),1.26(3H,s,H18),2.17(1H,d,J=12.3 Hz,H14a),2.74(1H,s,H13),5.08(1H,s,H17a),5.21(1H,s,H17b);13CNMR(CDCl3,125 MHz)δ:40.8(C1),19.2(C2),37.9(C3),43.9(C4),57.1(C5),21.1(C6),36.6(C7),47.9(C8),53.5(C9),39.9(C10),18.4(C11),32.7(C12),42.4(C13),35.4(C14),82.9(C15),160.4(C16),108.5(C17),29.1(C18),183.8(C19),16.0(C20)。上述数据与文献[15]报道的ent15βhydroxykaur16en19oic acid数据基本一致。
化合物9白色针晶。ESIMS m/z 331[M+Na]+。1HNMR(CD3OD,500 MHz),δ:1.16(3H,s,H19),1.20(3H,s,H18),2.11(1H,s,H13),3.31(1H ,d,J= 11.3 Hz,H17a),3.42(1H,d,J= 11.3 Hz,H17b);13CNMR(CD3OD,125 MHz)δ:41.4(C1),20.5(C2) ......
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