TABLE 6

Proton NMR data for Isolated Metabolite M-8

Basic Condition									Acidic Condition
Chemical Shift	Assignment	Integral	Multiplicity	Coupling Constants	Chemical Shift	Assignment	Integral	Multiplicity	Coupling Constants
ppm				Hz	ppm				Hz
7.75	d	1H	s		7.75	d	1H	s
7.39	b	2H	m		7.39	b	2H	m
7.31	c	2H	s		7.34	c	2H	s
7.03	a	2H	m		7.04	a	2H	m
4.92	e	1H	q	J = 6.6	4.90	e	1H	q	J = 6.7
4.30	2	1H	d	J = 2.9	4.34	2	1H	d	J = 2.9
4.26	6ax	1H	dt	J = 2.6, 12.0	4.27	6ax	1H	m
3.61	6eq	1H	dd	J = 11.3, 2.5	3.74	3	1H	d	J = 2.9
3.53	3	1H	d	J = 2.9	3.12	g	1H	d	J = 16.8
3.13	g	1H	d	J = 15.7	3.01	5eq	1H	m	J = 12
2.97	5eq	1H	m	J = 12	3.63	6eq	1H	m
2.45	5ax	1H	dt	J = 3.8, 12.0	2.76	g′	1H	d	J = 16.8
2.31	g′	1H	d	J = 15.7	2.75	5ax	1H	m
1.43	f	3H	d	J = 6.6	1.45	f	3H	d	J = 6.6