NMR (CDCl3,

C	17	18	19	20	22	23
1	33.94	33.94	36.21	33.89	33.88	33.90
2	27.02	27.01	30.99	27.29	26.99	26.97
3	73.76	73.72	71.05	73.75	73.66	73.68
4	32.31	32.31	34.21	32.25	32.26	32.26
5	42.40	42.41	42.46	42.34	42.33	42.36
6	26.71	26.69	26.67	26.99	27.75	26.67
7	26.34	26.35	26.51	26.99	26.71	26.29
8	36.40	36.49	36.97	36.28	36.17	35.49
9	50.21	50.14	49.83	50.07	50.02	50.06
10	34.14	34.14	33.99	34.07	34.05	34.08
11	203.99	204.01	211.80	203.88	203.54	203.81
12	85.89	85.90	84.12	85.31	85.11	85.46
13	50.10	50.05	52.45	50.34	50.48	50.07
14	55.90	55.40	55.89	53.17	54.10	53.65
15	24.97	24.50	24.60	26.28	26.27	25.99
16	23.17	23.25	23.30	26.70	23.18	23.24
17	53.97	54.01	52.45	54.01	53.09	54.23
18	9.76	10.03	8.83	9.33	9.09	9.53
19	23.14	23.14	23.23	23.18	23.15	23.14
20	32.52	38.65	38.08	37.97	37.01	36.56
21	20.48	22.24	22.22	14.71	14.46	15.58
22	29.32	142.79	143.46	74.00	74.17	77.93
23	31.98	113.36	112.84	63.50	62.56	66.53
24	179.27	-	-	-	-	-
CH₃CO	20.77	20.80	-	20.93	20.90	20.81
CH₃CO	170.64	170.50	-	170.69	170.94	170.51
CH₃CO	21.41	21.34	-	21.43	21.40	21.37
CH₃CO	170.23	170.18	-	170.29	170.46	170.12
CH₃CO	-	-	-	-	20.86	-
CH₃CO	-	-	-	-	169.94	-
CH₃CO	-	-	-	-	21.25	-
CH₃CO	-	-	-	-	170.46	-
OCCH₃	-	-	-	-	-	26.39
OCCH₃	-	-	-	-	-	25.33
O₂C(CH₃)₂	-	-	-	-	-	108.30

Table 1: δ 13C NMR (CDCl₃, 50.3 MHz) for compounds 17-20 and 22-23.