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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Constituintes químicos dos frutos de Iryanthera paraensis Huber / Chemical constituints of Iryanthera paraensis Huber

Magri, Fátima Maria Motter 17 February 1995 (has links)
Os frutos de Iryanthera paraensis Huber foram separados em suas partes constituintes e de seu pericarpo foi obtido o extrato clorofórmico que, por cromatografia e purificação em CLAE, forneceu cinco substâncias inéditas (uma neolignana e quatro γ-butanolidos): Eu-IP: reI (7S,8R)-4-hidroxi-3,5\'-dimetoxi-Δ1,3,5,1\',3\',5\',7- 7.O.3\',8.O.4\'-neolignana. A-1: (2S,3S,4S)-2-(9\'-fenil-n-nonil)-3-hidroxi-4-metilbutanolido. A-2: (2S,3R,4S)-2-(9\'-fenil-n-nonil)-3-hidroxi-4-metilbutanolido. B-1: (2S,3S,4S)-2-(11\'-fenil-n-undecil)-3-hidroxi-4-metilbutanolido. B-2: (2S,3R,4S)-2-(11\'-fenil-n-undecil)-3-hidroxi-4-metilbutanolido. A determinação das estruturas destas substâncias foi baseada principalmente em técnicas espectrométricas (EM, IV, RMN de 1H e de 13C). / The pericarps were removed from fruits of Iryanthera paraensis Huber, dried, ground and percolated with chloroform. The chloroform extract submitted to chromatographic techniques followed by HPLC purification, yielded a new neolignan and four new butanolides: Eu-IP: reI (7S,SR)-4-hydroxy-3,5\'-dimethoxy-Δ1,3,5,1\',3\',5\',7-7.O.3\',S.O.4\'-neolignan. A-1: (2S,3S,4S)-2-(9\'-phenyl-n-nonyl)-3-hidroxy-4-methylbutanolide. A-2: (2S,3R,4S)-2-(9\'-phenyl-n-nonyl)-3-hidroxy-4-methylbutanolide. B-1: (2S,3S,4S)-2-(11\'-phenyl-n-undecyl)-3-hidroxy-4-methyl-butanolide. B-2: (2S,3R,4S)-2-(11\'-phenyl-n-undecyl)-3-hidroxy-4- methyl-butanolide. The structural determination of these substances were based mainly on spectrometric methods (MS, IR, 1H and 13C NMR)
2

Constituintes químicos dos frutos de Iryanthera paraensis Huber / Chemical constituints of Iryanthera paraensis Huber

Fátima Maria Motter Magri 17 February 1995 (has links)
Os frutos de Iryanthera paraensis Huber foram separados em suas partes constituintes e de seu pericarpo foi obtido o extrato clorofórmico que, por cromatografia e purificação em CLAE, forneceu cinco substâncias inéditas (uma neolignana e quatro γ-butanolidos): Eu-IP: reI (7S,8R)-4-hidroxi-3,5\'-dimetoxi-Δ1,3,5,1\',3\',5\',7- 7.O.3\',8.O.4\'-neolignana. A-1: (2S,3S,4S)-2-(9\'-fenil-n-nonil)-3-hidroxi-4-metilbutanolido. A-2: (2S,3R,4S)-2-(9\'-fenil-n-nonil)-3-hidroxi-4-metilbutanolido. B-1: (2S,3S,4S)-2-(11\'-fenil-n-undecil)-3-hidroxi-4-metilbutanolido. B-2: (2S,3R,4S)-2-(11\'-fenil-n-undecil)-3-hidroxi-4-metilbutanolido. A determinação das estruturas destas substâncias foi baseada principalmente em técnicas espectrométricas (EM, IV, RMN de 1H e de 13C). / The pericarps were removed from fruits of Iryanthera paraensis Huber, dried, ground and percolated with chloroform. The chloroform extract submitted to chromatographic techniques followed by HPLC purification, yielded a new neolignan and four new butanolides: Eu-IP: reI (7S,SR)-4-hydroxy-3,5\'-dimethoxy-Δ1,3,5,1\',3\',5\',7-7.O.3\',S.O.4\'-neolignan. A-1: (2S,3S,4S)-2-(9\'-phenyl-n-nonyl)-3-hidroxy-4-methylbutanolide. A-2: (2S,3R,4S)-2-(9\'-phenyl-n-nonyl)-3-hidroxy-4-methylbutanolide. B-1: (2S,3S,4S)-2-(11\'-phenyl-n-undecyl)-3-hidroxy-4-methyl-butanolide. B-2: (2S,3R,4S)-2-(11\'-phenyl-n-undecyl)-3-hidroxy-4- methyl-butanolide. The structural determination of these substances were based mainly on spectrometric methods (MS, IR, 1H and 13C NMR)

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