Skip to main content
. Author manuscript; available in PMC: 2012 Jan 12.
Published in final edited form as: Tetrahedron Lett. 2011 Jan 12;52(2):219–223. doi: 10.1016/j.tetlet.2010.10.173

Table 2.

NMR [1H (500 MHz) 13C (125 MHz) D2O] assignments of the free base of 1D, pH 11.1.

Label 1H 13C
pH
11.1		 δ
(ppm)		 mult 3JHH (Hz) δ
(ppm)
C1 3.170
2.648		 dd
dd		 12.1 / 7.3
12.1 / 6.2		 48.39
C2 4.181 ddd 7.3 / 6.2 / 6.0 77.61
C3 3.801 D 6.0 80.67
C4 -- -- -- 63.41
C5 3.485
3.443		 D
d		 11.6
11.6		 66.98
CH3 1.010 S na 17.60