Byakangelicin

C18H20O7, 348.00

IR

(KBr) 1728, 1617, 1479, 1143

MASS

FABMS m/z 349 [M + H]+

1H NMR

(300 MHz, CDCL3) δ : 1.26 (3H, s, H-4"), 1.29 (3H, s, H-5"), 3.81 (1H, m, H-2"), 4.16 (OCH3), 4.23 (1H, dd, J = 7.9, 10.1 Hz, H-1b"), 4.57 (1H, dd, J= 2.7, 10.1 Hz, H-1a"), 6.27 (1H, d, J = 9.7 Hz, H-3), 6.99 (1H, d, J = 2.4 Hz, H-3'), 7.61 (1H, d, J = 2.4 Hz, H-4'), 8.10 (1H, d, J = 9.7 Hz, H-4)

13 C NMR

(75 MHz, CDCL3) 

δ : 24.99 (C-4"), 

26.62 (C-5"), 

60.61 (OCH3), 

71.50 (C-3"), 

75.91 (C-2"), 

76.04 (C-1"),

105.34 (C-3'), 

107.32 (C-10),

112.70 (C-3), 

114.39 (C-6), 

126.67 (C-8), 

139.58 (C-4), 

143.77 (C-9),

144.80 (C-5), 

145.21 (C-2'), 

150.09 (C-7), 

160.33 (C-2)