Polyphenolic acids of Lithospermum ruderale. II. Carbon-13 nuclear magnetic resonance of lithospermic and rosmarinic acids

Phytochemical Studies on Origanum rotundifolium

“…1-Tetradecanol (Compound 1, 45 mg) was isolated from the chloroform phase; rosmarinic acid (Compound 2, 44 mg) from ethyl acetate phase; lithospermic acid (Compound 3, 217 mg) fromthe aqueous phase (Figure 1). 1 H-NMR and 13 C-NMR data comply with the data given in the literature (Junges et al, 2000;Kelley et al, 1975;Kelley et al, 1976).…”

Phenyl Polypropanoids from Lindelofia stylosa

“…The comparison of 1 H-and 13 C-NMR data and physical data with those reported in the literature, indicated compounds 4-7 were esters of rosmarinic acid (4), 11,12) Omethyl rosmarinate (5), 13) ethyl rosmarinate (6) 14) and butyl derivative (7). 15) Their isolation from L. stylosa is reported here for the first time.…”

Coumarins from Peucedanum hystrix growing in Mongolia

“…Table 4. * Used numeration of coumarin sceleton's atoms like in structure (3) (scheme 1). Note: *For compound 1: 114.46 (C= at С-4); 3: 165.61 (C-2''), 116.77 (C-3''), 156.27 (C-4''), 22.03 (C-5''), 21.88 (C-6''); 7: 167.02 (C-2''), 128.11 (C-3''), 137.31 (C-4''), 20.26 (C-5''), 15.67 (C-6''); 8: 165.82 (C-2''), 116.41 (C-3''), 156.89 (C-4''), 19.93 (C-5''), 20.75 (C-6''), 168.46 (COCH 3 ), 27.28 (CH 3 ); 9: 166.08 (C-2''), 128.46 (C-3''), 137.71 (C-4''), 15.62 (C-5''), 20.81 (C-6''), 170.51 (COCH 3 ), 22.32 (CH 3 ); 10: 174.62 (C-2''), 44.21 (C-3''), 26.75 (C-4'' C-3''), 42.08 (C-4''), 173.33 (C-2''). 5-hydroxy-2-methyl-7-methoxy-4Н-chromen-4-оne) (4), oil.…”