. Author manuscript; available in PMC: 2012 Dec 27.

Published in final edited form as: J Nat Prod. 2011 Nov 18;74(12):2532–2544. doi: 10.1021/np200635r

Table 2.

¹³C NMR Data for Withanolides 1-7 and 16-19 (125 MHz)

Pos.	1^c	1^b	1a^a	1b^a	2^a	2a^a	2b^a	3^a	4^a	5^a	6^a	7^a	16^a	17^a	18^b	19^b	20^b
1	200.7	201.4	198.3	198.9	200.2	198.3	198.9	204.0	208.1	213.3	211.6	208.0	202.5	210.1	210.4	209.7	210.5
2	132.9	133.2	133.7	134.4	133.1	133.8	134.5	131.6	40.5	39.5	129.4	42.0	132.5	39.8	44.4	42.0	32.2
3	145.7	147.5	141.0	140.2	145.4	140.9	140.1	143.2	77.7	76.2	155.2	73.6	142.1	77.7	67.1	73.1	27.1
4	68.0	69.0	71.2	71.7	68.5	71.2	71.8	69.7	72.8	74.4	---	75.4	70.1	75.1	78.7	76.9	72.4
5	61.5	61.7	59.4	61.1	61.7	59.4	61.1	64.5	62.5	66.0	147.4	63.0	64.1	65.2	65.5	65.1	65.9
6	61.8	62.0	59.2	59.9	62.1	59.2	59.9	63.0	57.6	59.5	123.8	57.2	62.7	60.5	57.4	57.2	58.5
7	31.1	31.9	31.0	30.4	31.2	30.9	30.4	31.7	31.1	32.2	31.9	31.4	31.3	31.3	32.3	31.9	29.4
8	30.5	30.3	30.9	31.4	30.6	31.0	31.4	27.0	30.1	27.2	32.8	30.7	29.9	29.5	30.5	30.4	31.0
9	43.9	44.8	44.8	44.6	44.0	44.9	44.7	48.1	42.1	47.1	42.8	42.3	44.3	42.9	43.7	43.1	42.7
10	54.3	55.6	51.2	52.2	54.3	51.2	52.3	49.0	56.1	51.3	47.6	55.7	47.9	50.6	49.7	49.9	50.2
11	22.1	23.0	22.3	21.9	22.3	22.3	21.9	69.5	21.6	69.1	22.0	22.1	22.3	21.8	21.8	21.7	21.3
12	39.7	40.3	39.6	39.7	39.7	39.6	39.7	47.8	39.3	47.4	39.5	39.8	39.5	39.3	39.7	39.5	38.9
13	42.5	42.9	42.9	43.1	42.6	42.8	43.0	42.1	42.8	42.0	43.6	43.1	42.8	42.9	43.2	43.2	42.5
14	56.7	57.1	56.7	57.0	56.9	56.7	57.1	58.2	56.7	58.0	56.5	56.7	56.2	56.2	56.6	56.4	56.1
15	24.2	24.7	24.5	24.3	24.3	24.5	24.4	24.4	24.3	24.5	24.6	24.7	24.5	24.5	24.9	24.9	24.0
16	27.3	27.6	27.5	27.5	27.4	27.5	27.5	27.2	27.5	27.2	27.4	27.7	27.5	27.5	27.7	27.7	27.5
17	51.9	52.4	52.0	52.0	52.1	52.1	52.1	52.7	52.0	52.5	52.1	52.3	52.1	52.1	52.4	52.4	51.6
18	11.7	12.1	11.8	12.0	11.8	11.8	11.8	14.2	11.7	13.6	12.1	12.0	11.8	11.7	11.9	11.9	11.5
19	61.0	61.7	64.4	65.6	62.1	64.4	65.6	21.3	60.4	19.0	19.9	59.9	17.6	15.9	16.1	15.9	15.2
20	38.8	39.5	39.0	39.0	39.0	39.0	39.0	39.0	38.9	39.0	39.1	39.5	39.0	38.9	39.5	39.6	38.3
21	13.3	13.9	13.5	13.5	13.6	13.6	13.6	13.6	13.6	13.6	13.6	14.0	13.5	13.5	14.0	14.0	13.5
22	78.8	78.7	78.4	78.4	78.4	78.4	78.4	78.9	78.8	78.9	79.0	78.9	78.9	78.9	78.8	78.9	78.4
23	29.9	30.3	30.3	30.3	29.8	29.8	29.8	30.1	30.0	30.1	30.0	30.3	30.0	30.0	30.4	30.3	29.1
24	154.3	154.4	157.2	157.1	149.2	149.2	149.1	153.0	153.0	152.9	153.1	154.6	153.1	153.1	154.3	154.6	152.2
25	125.6	127.9	122.1	122.1	122.2	122.2	122.2	125.9	125.9	125.9	125.9	127.7	125.8	125.5	127.9	127.7	125.4
26	167.4	166.8	165.5	165.5	167.3	167.2	167.2	167.2	167.2	167.2	167.3	167.0	167.3	167.2	166.8	167.1	167.2
27	56.7	56.6	58.2	58.2	12.7	12.7	12.7	57.7	57.6	57.7	57.7	56.6	57.7	57.6	56.6	56.6	57.6
28	20.2	20.6	20.8	20.8	20.7	20.7	20.7	20.2	20.2	20.2	20.2	20.5	20.3	20.3	20.6	20.5	20.2
OCOCH₃-4			170.4	170.0		170.4	170.1
			21.1	21.1		21.0	21.1
OCOCH₃-19			170.6			170.7
			21.0			21.4
OCOCH₃-27			171.1	171.1
			21.4	21.0
OCH₃-3									57.6	57.4				57.0

In CDCl₃.

In C₅D₅N.

In CDCl₃ with trace amount of CD₃OD.