Hydroxycinnamic acid esters of phenethylalcohol glycosides from Rehmannia glutinosa var. Purpurea

Phenylethanoid glycosides from Stachytarpheta cayennensis (Rich.) Vahl, Verbenaceae, a traditional antimalarial medicinal plant

“…Proton signals at δ 2.79 ppm (2H, t, J = 6.2 Hz, H-7), 3.79 ppm (1H, m, H-8a) and δ 4.05 ppm (1H, m, H-8b) revealed that the second aromatic system is part of a phenylethanoid moiety. The sugar resonances were again similar to that of (2), allowing the identifi cation of (3) as leucosceptoside A (Miyase et al, 1982;Sasaki et al, 1989). In previous investigations, leucosceptoside A was isolated together with iso-acteoside and acteoside out of the under terrestrial parts of Leucosceptrum japonicum (Miq.)…”

“…This is refl ected in the positive FAB-MS showing pseudomolecular peaks [M+Na] + at m/z 675 (4), respectively [M+Na] + at m/z 661 (5). The 1 H NMR spectrum of martynoside (4) showed a signal for a methoxy group at δ 3.89 ppm (3H, s, OCH 3 -3''') in the acid moiety and furthermore a signal at δ 3.81 ppm (3H, s, OCH 3 -4) in the phenylethanoid portion (Sasaki et al 1978;Miyase et al 1982;Calis et al 1984;Teborg and Junior 1989) (Figure 2), whereas jionoside D possesses only one methoxy group at δ 3.81 ppm (3H, s, OCH 3 -4) (Sasaki et al 1989). Martynoside (4) was isolated from Miyase and co-workers in 1982 from Leucosceptrum japonicum (Miq.)…”

“…var. purpurea Makino, Scrophulariaceae (Sasaki et al, 1989). Phenylethanoid glycosides are characteristic constituents of families belonging to the order Lamiales, as e.g.…”

A novel strategy to evaluate the quality of traditional Chinese medicine based on the correlation analysis of chemical fingerprint and biological effect

“…Chemical components in RG include iridoids glycosides, ionone glycosides, and phenylpropanoid glycosides [11][12][13]. Sixteen compounds were identified according to the method described above; the results are shown in Supplementary Table S1 [13][14][15][16][17][18][19][20]. Peak intensities of these compounds between the raw and processed RGs were analyzed by t-test (Table 2).…”

Change of Inorganic Component, Reducing Sugar, Catalpol and Benzo[α]pyrene Contents of Rehmannia glutinosa Libosch. var. purpurea Makino by Drying Methods

“…숙지황의 약성 및 효능이 생지황 및 건지황과 차이가 나는 것은 그 제조과정에서 함유성분의 함량 및 성상이 변화되기 때문인 것으로 알려져 있다. 지황의 주성 분은 iridoid로서 rehmaglutin A, B, C 및 D, iridoid 배당체 로서 catalpol, dihydrocatalpol, aucubin, leonuride, melittoside, rehmannioside A, B, C 및 D 등, 당류로서 raffinose, mannotriose 등 그리고 lysine, histidine 등의 아미노산과 β-sitosterol과 stigmasterol 등이 알려져 있고, 성분 중 catalpol은 생지황 및 건지황의 품질관리를 위한 지표물질로 이용되어 왔 다 (Nishimura et al, 1990;Kim et al, 2000;Nishimura et al, 1989;Oshio & Inouye, 1981;Sasaki et al, 1989;Shoyama et al, 1986;Shoyama et al, 1987;Takagi et al, 1982). 또한 최근 Lee 등 (2011)은 국내산 지황으로부터 β-sitosterol을 비롯한 24종의 화합물을 분리한 바 있다.…”