石蒜鳞茎中的生物碱成分研究(9)
Compound 6 Yellow solid. ESI-MS m/z 285[M+H]+.1H-NMR(CDCl3,500 MHz) δ: 13.01(1H,s,5-OH),7.89(2H,m,H-2′,6′),7.54(3H,m,H-3′~5′),6.63(1H,s,H-8),6.52(1H,s,H-3),4.06(3H,s,6-OCH3); 13C-NMR(CDCl3,125 MHz) δ: 183.1(C-4),164.1(C-2),155.1(C-7),153.3(C-5),152.1(C-9),131.9(C-4′),131.3(C-6),130.4(C-1′),129.1(C-3′,5′),126.3(C-2′,6′),105.4(C-3,10),93.4(C-8),60.9(6-OCH3). Those data were in agreement with those in reference,suggesting compound 6 to be oroxylin A[19].Compound 7 Yellow powder. ESI-MS m/z 285 [M+H] +. 1H-NMR(DMSO-d6 ......
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