Careyarboside A: A New Flavan-3-ol Glycoside from the Stems of Careya arborea (Lecythidaceae)

Table 3

¹³C (175 MHz) data of compounds 1–7 (δ in ppm)^a.

Position	1^b	2^b	3^b	Position	4^b	5^b	6^b	7^c
	δ mult.				δ mult.
2	83.2 d^d	83.7 d	80.5 d	1	129.7 s	161.2 s	131.3 s	122.1 s
3	67.9 d	68.5 d	67.3 d	2	154.9 s	94.9 d	111.8 d	110.5 d
4	29.1 t	29.5 t	29.8 t	3	95.4 d	162.7 s	147.8 s	146.5 s
5	158.3 s	158.7 s	158.9 s	4	156.2 s	97.1 d	136.7 s	139.7 s
6	97.1 d	96.9 d	96.9 d	5	95.4 d	161.3 s	148.5 s	146.5 s
7	159.1 s	159.0 s	158.9 s	6	154.9 s	98.0 d	113.6 d	110.5 d
8	98.2 d	95.8 d	96.1 d	7			40.5 t	170.5 s
9	156.8 s	157.6 s	157.9 s	8			64.2 t
10	103.0 s	101.2 s	100.6 s	1′	106.2 d	102.6 d	105.6 d
1′	137.0 s	132.0 s	131.7 s	2′	76.4 d	75.3 d	75.5 d
2′	107.9 d	107.9 d	108.0 d	3′	78.7 d	78.8 d	78.7 d
3′	152.7 s	148.4 s	148.1 s	4′	72.0 d	71.5 d	71.4 d
4′	137.1 s	135.4 s	135.1 s	5′	78.9 d	79.2 d	79.3 d
5′	152.7 s	148.4 s	148.1 s	6′	63.0 t	62.6 t	62.5 t
6′	107.9 d	107.9 d	108.0 d	OCH3	56.7 q	55.5 q
1″	102.7 d
2″	75.3 d
3″	79.0 d
4″	71.3 d
5″	79.1 d
6″	62.5 t
OCH3	60.5 q

^aAssignments confirmed by ¹H-¹H COSY, HSQC, and HMBC experiments. ^bMeasured for pyridine-d₅ solution. ^cMeasured for CD₃OD solution. ^dCarbon multiplicity deduced by HSQC and DEPT.