Raimondal,a new sesquiterpenoid from pigment glands of Gossypium raimondii |
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| Authors: | Robert D Stipanovic Alois A Bell Daniel H O&#x;Brien |
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| Institution: | U.S. Department of Agriculture, SEA, National Cotton Pathology Research Laboratory, P.O. Drawer JF, and Department of Chemistry, Texas A & M University, College Station, TX 77841, U.S.A. |
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| Abstract: | A new sesquiterpenoid isolated from pigment glands of leaves and immature bolls of Gossypium raimondii has been named raimondal and identified as 5-iso-propyl-2-methoxy-3-methyl-1,6,7-trihydroxy-8-naphthaldehyde. Raimondal was oxidized by ferric chloride to o-hemigossypolone (8-formyl-5-iso-propyl-3-methyl-6,7-dihydroxy-1,2-naphthoquinone) which was readily reduced to its hydroquinone, 2-hydroxyhemigossypol. Neither of the two oxidation products were detected in extracts from G. raimondii. |
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| Keywords: | Malvaceae cotton sesquiterpenoid naphthaldehyde 2-hydroxyhemigossypol 7-methoxyhemigossypol |
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