Table 1.

NMR data (δ, ppm; Varian INOVA 500 MHz, 25°C) for the C. difficile 630 glycopeptide

	H/C 1	H/C 2	H/C 3	H/C 4	H/C 5	H/C 6	Me
GlcNAc	4.65	3.85	4.17	3.63	3.51	3.79; 3.93
	100.1	55.6	79.9	70.5	76.6	61.6
N-Me-l-Thr		3.52	4.51	1.41			2.76
	172.0	70.5	73.0	19.6			33.9

Exact mass of glycosyl cation 398.109035.

NAc signals C-1 176.1; H/C-2 2.08/23.8 ppm. ³¹P at −0.5 ppm.