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Home > Organic Chemistry > Lactones (Find 240 items)

Lactones

Narbomycin

(6036-25-5)
ChEBI: A macrolide antibiotic that is narbonolide having a 3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl residue attached at position 6. It is biosynthesised by Streptomyces venezuelae.

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(3R,4S,5S,7R,9E,11R,12R)-12-Ethyl-4-hydroxy-3,5,7,11-tetramethyloxacyclododec-9-ene-2,8-dione

(81644-19-1)
ChEBI: A macrolide that consists of oxacyclododec-9-ene-2,8-dione bearing four methyl substituents at positions 3, 5, 7 and 11 as well as a hydroxy group at position 4 and an ethyl substituent at position 12. The aglycone of the macrolide antibiotic 10-deoxymethy ycin.

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Lactone refers to an organic substance that contains both a carboxyl group and a hydroxyl group in the same molecule, and the two are dehydrated. Organic compounds with one and only one ester group in the ring. Common ones are x=2, 3 or 4, which are called β-, γ- or δ-lactones, respectively. They are generally insoluble in water, easily soluble in organic solvents such as ethanol and ether, and their density is generally lower than that of water.
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