Chemical Constituents of the Leaves of Elaeagnus grandifolia

Quadrangulosides A–F: new pregnane glycosides from Caralluma quadrangula

“…17,19,22 So, the aglycone moiety was established as 12β- O -benzoyl-20- O -isovaleroyl-3β,12β,14β,20β-tetrahydroxy-(20 S )-pregn-5-ene. 12,16,19,22…”

“…Structure elucidation of these compounds were performed using extensive spectroscopic ( 1 H, 13 C, APT, H,H COSY, HSQC, HMBC and NOESY NMR) data and spectrometric (ESI MS) analyses. The new pregnane glycosides quadrangulosides A-F (1-6) as well as the two compounds (12,13) are possessing the boucerin aglycon, compounds (11,15,16) having the calogenin aglycon, compounds (8,10,18) having the ketocalogenin skeleton and compound (9) having the 5a-dihydrocalogenin structure (Fig. 1).…”

Phytochemical Analysis and Biological Activities of the Ethanolic Extract of Daphne sericea Vahl Flowering Aerial Parts Collected in Central Italy

“…From this chromatographic procedure, all the compounds were identified by means of exhaustive comparison of their spectroscopic data with those reported in the literature and with authentic standard compounds already available in our laboratory. In particular, the identified compounds were the following: tri-linoleoyl- sn -glycerol ( 2 ) and pheophorbide a ethyl ester ( 3 ) [ 14 , 15 ] in mixture in a ratio of 20:1 (w/w) from the assembly of fractions 6–11 for the total weight of 10.2 mg; α-linolenic acid ( 1 ) and pilloin ( 4 ) [ 14 , 16 ] in mixture in a ratio of 4:1 ( w/w ) from the assembly of fractions 21–30 for the total weight of 16.9 mg; pilloin ( 4 ) and sinensetin ( 5 ) [ 16 , 17 ] in mixture in a ratio of 5:1 ( w/w ) from the assembly of fractions 31–33 for the total weight of 5.4 mg; pilloin ( 4 ) and rutamontine ( 7 ) [ 16 , 18 ] in mixture in a ratio of 1.5:1 ( w/w ) from the assembly of fractions 34–35 for the total weight of 7.7 mg; p -coumaric acid ( 9 ) [ 19 ] in mixture with other unidentified compounds (ratio not calculable) from the assembly of fractions 115–127 for the total weight of 12.1 mg; syringin ( 8 ) [ 15 ] in mixture with ethoxy glucose and several saccharides (ratio not calculable) from the assembly of fractions 138–147 for the total weight of 6.8 mg; yuanhuanin ( 6 ) [ 20 ] and p -anisic acid ( 10 ) [ 21 ] in mixture in ratio 10:1 ( w/w ) from the assembly of fractions 161–179 for the total weight of 6.6 mg; caffeic acid ( 11 ) [ 22 ] in mixture with several saccharides (ratio not calculable) from the methanol column wash for the total weight of 33.8 mg. The identification of components in mixture was conducted by applying a well-established method developed by our research group [ 23 , 24 , 25 , 26 , 27 , 28 ].…”

The first phytochemical study of Elaeagnus latifolia in Vietnsam

“…[1] The methanol extract of this plant showed antioxidant, [3][4] antimicrobial [4] and DNA protective activities. [3] It was reported that members of Elaeagnus genus contained many bioactive compounds such as polyphenols, [5] steroids, [5] neolignans, [6] terpenoids. [6] However, phytochemistry of Elaeagnus latifolia has not been studied up to now.…”

“…[6] However, phytochemistry of Elaeagnus latifolia has not been studied up to now. Herein we report on the first isolation and characterization of nine metabolites from the leaves and twigs of E. latifolia, including ursolic acid (1), esculentic acid (2), 2-O-trans-pcoumaroyl alphitolic acid (3), a mixture of (6S,7Z,9S)-6,9-dihydroxy-7-megastigmen-3-one ( 4) and (-)-boscialin (5), astragalin (6), tiliroside (7), 2phyten-1-ol ( 8) and 4-[3'-(hydroxymethyl)oxiran-2'yl]-2,6-dimethoxyphenol (9).…”