Table 1.

1H and 13C NMR data for biotransformation products 1, 2, and 3

Positionδ (ppm)a
Biotransformation product 1Biotransformation product 2Biotransformation product 3
13C (ppm)1H (ppm)13C (ppm)1H (ppm)13C (ppm)1H (ppm)
143.714.5443.564.8353.934.76
240.613.3146.923.4942.992.56
338.542.8144.692.3531.984.72
44.78192.8069.744.75
4-OH5.24
5109.806.93106.217.53105.326.66
6147.00148.26144.67
7148.70153.39147.51
8110.007.17109.866.71109.786.54
9133.01127.73128.60
10131.67141.95129.06
1167.874.32, 4.3667.214.52, 3.8171.294.81, 4.84
12175.42173.42172.41
13101.195.97102.636.08101.625.89, 5.90
1′130.56128.37129.34
2′108.306.27107.456.39108.046.28
3′146.87147.07147.40
3′-OMe56.343.3756.653.7556.193.50
4′134.54134.67135.02
5′146.87147.07147.40
5′-OMe56.343.3756.653.7556.133.50
6′108.306.27107.456.38108.046.28
2″153.38
2″-Me29.451.18
3″158.06
3″-Me21.912.38
5″158.06
5″-Me21.912.38
6″142.33
6″-Me29.921.18
  • a 1H and 13C NMR spectra were obtained with deuterated chloroform (CDCl3).