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Substance chimique
A ketone containing a hydroxy group on the β-carbon relative to the C=O group.
A member of the class of phenoxazines that is 1,9-dimethyl-3 H -phenoxazin-3-one carrying an additional hydroxy substituent at position 7 as well as two 2,4-dihydroxy-6-methylphenyl substituents at positions 2 and 8. The isomer in which the hydroxy groups at positions 2' and 2'' on the phenyl rings are both on the same side of the plane of the phenoxazine ring system. A component of orcein, a mixture of dyes isolated from lichens.
A ribonucleotide that is the 5'-monophosphate derivative of β-hydroxywybutosine.
A nucleotide residue derived from β-wybutosine 5'-monophosphate with linkages at the 3'- and 5'-positions.
An organic anionic group obtained by deprotonation of the phosphate OH group of β-hydroxywybutosine 5'-monophosphate.
An ionone that is but-3-en-2-one substituted by a 2,6,6-trimethylcyclohex-1-en-1-yl group at position 4.
An apo carotenoid monoterpenoid that is β-ionone substituted by an epoxy group across positions 5 and 6.
A β- D -glucoside that is β- D -glucopyranose in which the hydroxy group at position 1 R is substituted by a (2-hydroxybenzyl)oxy group. It is isolated from the flowers of Filipendula ulmaria .
A ketoester where the ketone and ester functionalities are separated by a single carbon atom.
A ketonitrile in which the cyano group and the carbonyl group are attached to the same carbon atom.
A lactam in which the amide bond is contained within a four-membered ring, which includes the amide nitrogen and the carbonyl carbon.
An organonitrogen heterocyclic antibiotic that contains a β-lactam ring.
Any β-lactam antibiotic which causes the onset of an allergic reaction.
A four-membered lactam ring.
A four-membered lactone ring.
The β-anomer of lactose.
A benzochromenone that is 3,4-dihydro-2 H -benzo[ h ]chromene-5,6-dione substituted by geminal methyl groups at position 2. Isolated from Tabebuia avellanedae , it exhibits antineoplastic and anti-inflammatory activities.
A β-amino acid that is pentanoic acid substituted at positions 3 and 4 by amino and methyl groups respectively.
β-Limit dextrin is the remaining polymer produced by enzymatic hydrolyse of amylopectine with beta amylase which cannot hydrolyse the alpha-1,6 bonds at branch points.
A bridged compound and sesquiterpene that is tricyclo[5.4.0.0 2,8 ]undecane that is substituted by methyl groups at positions 2, 6, and 6, and by a methylidene group at position 9.
A sesquiterpene that is 1a,2,3,3a,4,5,6,7b-octahydro-1 H -cyclopropa[ a ]naphthalene carrying foru methyl substituents at positions 1, 1, 3a and 7.
