Table 2.

Retention times t_r (RP-HPLC) and lipophilicity indices log k (RP-HPLC) of the compounds 1a–p estimated in the mobile phases with a various volume ratio (v/v) of a methanol (MeOH) organic modifier and water.

Comp.	Mobile Phase MeOH/Water (v/v)
	80:20		85:15		90:10		95:5		Pure MeOH
	tr (min)	log k	tr (min)	log k	tr (min)	log k	tr (min)	log k	tr (min)	log k
1a	13.883	0.7165	10.694	0.5756	7.830	0.3958	5.766	0.2008	4.224	−0.0403
1b	17.200	0.8254	12.647	0.6656	9.449	0.5064	6.514	0.2841	4.526	0.0203
1c	25.694	1.0206	16.950	0.8162	11.292	0.6053	7.431	0.3683	5.246	0.1287
1d	31.000	1.1092	19.600	0.8882	13.553	0.7022	7.892	0.4052	5.385	0.1573
1e	10.330	0.5584	6.917	0.3183	5.400	0.1478	3.822	−0.1454	3.329	−0.2956
1f	12.400	0.6574	9.200	0.4911	6.280	0.2546	4.022	−0.0941	3.340	−0.2913
1g	17.200	0.8254	11.402	0.6104	7.483	0.3679	5.153	0.1182	3.583	−0.2067
1h	22.003	0.9521	13.701	0.7159	8.532	0.4565	5.788	0.2092	3.556	−0.2153
1i	24.020	0.9881	16.917	0.8153	11.691	0.6240	7.765	0.3954	5.127	0.1205
1j	29.525	1.0863	20.021	0.8981	13.060	0.6828	8.520	0.4509	5.295	0.1449
1k	47.108	1.3023	27.001	1.0424	16.533	0.8038	9.641	0.5221	6.938	0.3303
1l	70.012	1.4831	38.800	1.2152	22.636	0.9619	11.670	0.6271	7.756	0.3996
1m	15.731	0.7805	9.218	0.4922	6.420	0.2695	4.685	0.0424	3.519	−0.2275
1n	22.183	0.9502	12.370	0.6542	8.156	0.4205	4.995	0.0941	3.947	−0.1047
1o	29.174	1.0807	13.651	0.7059	9.634	0.5174	5.095	0.1095	4.127	−0.0618
1p	33.719	1.1484	17.129	0.8215	11.332	0.6072	5.801	0.2051	3.925	−0.1102