1982
DOI: 10.1016/0040-4020(82)80223-8
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Alcoyl-gluco-alcaloides: nouveaux composes isoles de pauridiantha lyalii brem (rubiacees)

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Cited by 12 publications
(9 citation statements)
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“…padifolia led to the extraction of the well-known tryptamine-iridoid alkaloids strictosidine (4) and the ß-carboline derivatives lyaloside (5) as well as its derivative (E)-O-(6 0 )-(4 00 -hydroxy-3 00 ,5 00 -dimethoxy)-cinnamoyl lyaloside (6) (Valverde et al, 1999;Levesque et al, 1982). The alkaloids isolated in this survey correspond well to various other phytochemical studies on Palicourea s.l.…”
Section: Resultssupporting
confidence: 67%
“…padifolia led to the extraction of the well-known tryptamine-iridoid alkaloids strictosidine (4) and the ß-carboline derivatives lyaloside (5) as well as its derivative (E)-O-(6 0 )-(4 00 -hydroxy-3 00 ,5 00 -dimethoxy)-cinnamoyl lyaloside (6) (Valverde et al, 1999;Levesque et al, 1982). The alkaloids isolated in this survey correspond well to various other phytochemical studies on Palicourea s.l.…”
Section: Resultssupporting
confidence: 67%
“…Os esteróides, o éster 1 e o alcalóide harmana (2) foram identificados através da análise dos dados fornecidos pelos espectros IV e RMN 1 H e 13 C comparados com valores registrados na literatura [9][10][11][12][13][14][15] 16 , como descrito na literatura 8 . A formação deste produto serviu como um dado adicional para confirmação da estrutura proposta.…”
Section: Resultsunclassified
“…Do extrato hexânico foi identificada a mistura de sitostenona e estigmastenona. Os derivados 4a e 5 estão sendo registrados pela primeira vez na literatura.Os esteróides, o éster 1 e o alcalóide harmana (2) foram identificados através da análise dos dados fornecidos pelos espectros IV e RMN 1 H e 13 C comparados com valores registrados na literatura [9][10][11][12][13][14][15] . O espectro de RMN 1 H de 3 mostrou sinais de seis hidrogênios aromáticos da unidade b-carbolínica.…”
unclassified
“…It 8 2) 11a = 0.42 (CHC13 MeOH NH4OH, 8 2 : 0.1); positive reaction in FeC13/HC1O4 and Dragendorif assays; 1H-NMR (200 MHz, DMSO-d6): 5= 2.72(1H, ddd,J= 9.8, 8.8, 5.3 Hz, H-20), 3.10(IH, m, H-2'), 3.1-3.6 (4H, m, H-3',4' 14a,b), 3.55 (1H, m, H-5'), 3.65 (1H, m, H-iS), 3.70 (6H, s, 22-OMe, 6"-OMe), 4.30 (1H, dd, J = 11.8, 5.7Hz, H-6'a), 4.40 (iH, dd, J= 11.8, 1.5Hz, H-6'b), 4.63 (iH, d, J= 8.8Hz, H-i'), 4.77 (1H, dd, J= 10.4, 2.0Hz, H-l8cis), 4.92 (iH, dd, J = 17.2, 2.0Hz, H-i8trans), 5.1-5.3 (3H, m, OH groups), 5.44 (1H, d, J= 5.3 Hz, H-2i), 5.67 (1H, ddd, J= 17.2, 10.4,8.8Hz, H-19), 6.47 (1H, d, J= 15.9 Hz, H-2"), 6.60(1H, d, .1= 8.1 Hz, H-8"), 6.93 (1H, s, 7"-OH), 6.98 (1H, dd, J= 8.1, 1.8 Hz, H-9"), 7.20 (2H, m, H-iD, H-S". 7.46 (1H, s, H-17), 7.52 OH, d, J= 15.9 Hz, H-3"), 7.53 (2H, m, H-li, H-12), 7.87 (1H, d, J= 5.3 Hz, H-6), 8.15 (1H, d, J= 7.9Hz, H-9), 8.23 (IH, d, J= 5.3Hz, H-5), 11.3 (IH, s, H-i); "C-NMR (50 MHz, DM50-cl6): 5 = 30.3 (15), 32.6 (14), 42.8 (20), 50.5 (COOMe), 55.5 (ArOMe), 63.1 (6'), 69.9 (4'), 72.8 (2'), 74.0 (5'), 76.4 (3'), 96.2 (21), 99.1 (1'), 109.8 (16), 111.0 (5"), 111.7 (12), 112.3 (6), 114.1 (2"), 115.2 (8"), 118.4 (10), 118.5 (18), 120.9 (7), 121.4 (9), 123.0 (9"), 125.3 (4"), 126.7 (8), 127.5 Ui), 134.0 (19)…”
Section: Introductionmentioning
confidence: 99%