1983
DOI: 10.1590/1809-43921983131215
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ESTUDO QUÍMICO DE Humirianthera ampla. (Miers) Baehni (Icacinacea)

Abstract: RESUMO Dos tubérculos de H. ampla (Miers)Baehni (Icacinacea), coletados em Itacoatiara (AM), foram Isolados, além de sitosterol, os humiriantenolídeos A, C e 0. INTRODUÇÃOAs espécies vegetais pertencentes ao gênero Humirianthera possuem tubérculos ricos em amido e são comestíveis após sucessivas lavagens com água, já que aparentemente contêm substân-cias tóxicas (Hegnauer. 1966 A H. ampla, conhecida pelos nomes populares de "mairá" ou "mairã" é considerada tóxica no Médio e no Baixo Amazonas, ocorrendo em terr… Show more

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“…In the study by Zoghbi et al [ 13 ], C. rupestris tubers were isolated and identified and several secondary metabolites were classified as degraded γ-lactonic diterpenoids, with structures containing between seventeen and nineteen carbon atoms. Afterward, Zoghbi et al [ 14 ], using tubers and stems of C. ampla and C. rupestris , isolated sodium and potassium thiocyanate and sodium and potassium nitrite and nitrate and obtained concentrations of 1 g from the tuber and 2.75 g from the stem, respectively.…”
Section: Resultsmentioning
confidence: 99%
“…In the study by Zoghbi et al [ 13 ], C. rupestris tubers were isolated and identified and several secondary metabolites were classified as degraded γ-lactonic diterpenoids, with structures containing between seventeen and nineteen carbon atoms. Afterward, Zoghbi et al [ 14 ], using tubers and stems of C. ampla and C. rupestris , isolated sodium and potassium thiocyanate and sodium and potassium nitrite and nitrate and obtained concentrations of 1 g from the tuber and 2.75 g from the stem, respectively.…”
Section: Resultsmentioning
confidence: 99%
“…Both genera produce pimarane diterpenoids with similar AB-ring systems bearing a lactone moiety. This group is represented by alkaloids from L elaessensis and I. guesfeldtii as well as the non alkaloidal icacinol, from the later species (39)(40)(41)(42) the humiriantholides A-F from H rupestris (17), and the humiriantholide-A, -C and -D from H ampla (18) (Figure 9). …”
Section: Mono- Di-and Triterpenoids From Icacinaceaementioning
confidence: 99%