Table 1. UV and MS spectra data date for pregna-5,7-diene-3β,17α,20-triols and its derivatives.

No	Parental compound	Structure type	UV max (nm)	Predicted MW	MS+
4R	1	5,7-diene	261,270,281,290	332.25	355.25 [M+Na]+
4R1	4R	preD-like	260	332.25	ND
4R-D	4R	D-like	265	332.25	355.25 [M+Na]+
4R-L	4R	L-like	262,271,281	332.25	355.25 [M+Na]+
4R-T	4R	T-like	270,279,291	332.25	355.25 [M+Na]+
4R-iT	4R	isoT-like (oxide)	240,248, 257	364.25	387.15 [M+Na]+
4R7	4R	5,7,9(11) triene	312,323,340	330.22	ND
4S	1	5,7-diene	263,271,282,292	332.25	355.25 [M+Na]+
4S1	4S	preD-like	260	332.25	ND
4S-D	4S	D-like	265	332.25	355.25 [M+Na]+
4S-L	4S	L-like	262,271,282	332.25	355.25 [M+Na]+
4S-T	4S	T-like	272,282,291	332.25	355.25 [M+Na]+ND
4S-iT1	4S	isoT-like	241,248, 257	332.25	355.25 [M+Na]+
4S-iT2	4S	isoT-like (oxide)	241,248, 257	332.25	387.15 [M+Na]+
4S7	4S	5,7,9(11) triene	312,323,340	330.22	ND

Bold – purified and characterized (NMR), italics – characterized by UV spectra, ND – not determined