New tricyclic and tetracyclic pyranocoumarins with an unprecedented C-4 substituent. Structure elucidation of tamanolide, tamanolide D and tamanolide P from Calophyllum inophyllum of French Polynesia.
Three new pyranocoumarin derivatives, tamanolide (1), tamanolide D (2) and tamanolide P (3), were isolated from the almond seeds of Calophyllum inophyllum L. (Clusiaceae) grown in French Polynesia. These compounds, having an unprecedented C-4 isobutyl substituent, have been characterized as a new class of pyranocoumarins called tamanolides. Their structures were elucidated on the basis of 1D and 2D NMR techniques (COSY, NOESY, HSQC and HMBC) in association with MS (HR-ESI-MS) data analysis.
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Laboratoire de Biodiversité Terrestre et Marine, Université de Polynésie Française, BP 6570, 98702 Faaa, Tahiti, Polynésie française.
Raharivelomanana
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Soulet
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Bianchini
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JP
Herbette
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Faure
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D029759:Calophyllum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D009754:Nuts / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D011114:Polynesia; D039681:Pyranocoumarins / Q000032:analysis / Q000737:chemistry* / Q000145:classification; D012639:Seeds / Q000737:chemistry*
D010936:Plant Extracts; D039681:Pyranocoumarins