TABLE 2.

TLC analyses of the metabolic intermediates trapped as hydroxamic acid derivative^a

Hydroxamic acid	Rf value in solvent:
	A	B	C
Hydroxamic acid I	0.75	0.59	0.69
Hydroxamic acid II	0.59	0.31	0.42
Cyclopropanecarboxohydroxamic acid	0.76	0.59	0.68
3-Hydroxybutyrohydroxamic acid	0.60	0.33	0.43
Methacrylohydroxamic acid	0.79
dl-3-Hydroxyisobutyrohydroxamic acid	0.64	0.42	0.49

^aExperimental details are described in the text. Solvent systems used for silica gel TLC were as follows: A, water-saturated 2-butanol; B, 2-butanol containing 1% CH₃COOH; and C, 2-butanol containing 1% NH₄OH.