   9-Methoxygeissoschizol, an alkaloid from bark of strychnos guianensis; ; Llabres, Gabriel  et alin Phytochemistry (1996), 43(5), 1125-1127 The isolation and structure determination of 9-methoxygeissoschizol from the stem bark of Strychnos guianensis is described. Elucidation of its structure is mainly based on NMR studies. Detailed reference viewed: 14 (2 ULg)Guianensine, a zwitterionic alkaloid from Strychnos guianensis; Llabres, Gabriel ; et alin Phytochemistry (1995), 40(5), 1557-1560 The isolation and structure determination of an alkaloid isolated from the stem bark of Strychnos guianensis is described. Elucidation of its structure is based mainly on 1D and 2D NMR studies. The new ... [more ▼] The isolation and structure determination of an alkaloid isolated from the stem bark of Strychnos guianensis is described. Elucidation of its structure is based mainly on 1D and 2D NMR studies. The new alkaloid has a zwitterionic asymmetrical bis-indole structure and is named guianensine. [less ▲] Detailed reference viewed: 28 (3 ULg)An indolinic cryptoalkaloid from Strychnos mattogrossensisAngenot, Luc ; ; et alin Phytochemistry (1990), 29(8), 2746-2749 A new indolinic cryptoalkaloid, mattogrossine, has een isolated from the roots and branches of Strychnos mattogrossensis collected near Manaus. Elucidation of its structure is based mainly on 2D NMR ... [more ▼] A new indolinic cryptoalkaloid, mattogrossine, has een isolated from the roots and branches of Strychnos mattogrossensis collected near Manaus. Elucidation of its structure is based mainly on 2D NMR studies. Two other indolinic alkaloids were also obtained: strychnobrasiline and 12-hydroxy-11-methoxystrychnobrasiline, and their 13C NMR data are provided [less ▲] Detailed reference viewed: 9 (0 ULg)Alkaloids of Rauwolfia sellowii from Amazonia; ; et al in Journal de Pharmacie de Belgique (1988), 43(5), 379-381 Reserpiline, sarpagine, lochnerine, harman and beta-yohimbine were the main alkaloids identified in the bark of Rauwolfia sellowii collected in Amazonia. This chemical race could be used for the ... [more ▼] Reserpiline, sarpagine, lochnerine, harman and beta-yohimbine were the main alkaloids identified in the bark of Rauwolfia sellowii collected in Amazonia. This chemical race could be used for the commercial preparation of reserpiline, which is included in various pharmaceutical proprietary preparations used as antihypertensive. [less ▲] Detailed reference viewed: 22 (0 ULg)Alkaloids of Rauwolfia sellowii from Amazonia; ; et al in Fitoterapia (1988), 59(5), 429 Five indole alkaloids ( reserpiline, sarpagine, lochnerine, harman, beat-yohimbine) are identified in the root bark of Rauwolfia sellowii collected for the first time in Amazonian forest (Rio Branco, Acre ... [more ▼] Five indole alkaloids ( reserpiline, sarpagine, lochnerine, harman, beat-yohimbine) are identified in the root bark of Rauwolfia sellowii collected for the first time in Amazonian forest (Rio Branco, Acre). [less ▲] Detailed reference viewed: 25 (1 ULg) |
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