Table 1.

Structures of O-alkyl derivatives of naringenin and their oximes.

No.	R1	R2	R3
1a, 1b	Me	H	H
2a, 2b	Me	H	Me
3a, 3b	Me	Me	Me
4a, 4b	Et	H	H
5a, 5b	Et	H	Et
6a, 6b	Et	Et	Et
7a★, 7b★	n-Pr	H	H
8a★, 8b★	n-Pr	H	n-Pr
9a★, 9b★	n-Pr	n-Pr	n-Pr
10a★, 10b★	i-Pr	H	H
11a★, 11b★	i-Pr	H	i-Pr
12a, 12b★	Bu	H	H
13a★, 13b★	Bu	H	Bu
14a, 14b	Pe	H	H
15a, 15b	Pe	H	Pe
16a, 16b★	De	H	H
17a★, 17b★	De	H	De
18a, 18b	Dod	H	H
19a, 19b	Dod	H	Dod

^★ novel derivatives of naringenin. Me—methyl, Et—ethyl, n-Pr—propyl, i-Pr—isopropyl, Bu—butyl, Pe—pentyl, De—decyl, Dod—dodecyl group.