polyketiden.

Brit.

/ˌpɒlɪˈkiːtʌɪd/, U.S.

/ˌpɑliˈkiˌtaɪd/

Origin: Formed within English, by derivation. Etymons: poly- comb. form, keto- comb. form, -ide suffix.

Etymology: < poly- comb. form + keto- comb. form + -ide suffix.

Chemistry and Biochemistry.

An organic compound in which carbonyl groups alternate with single carbon atoms in a chain, thus: —CO—C—CO—C—.Such compounds typically result from the condensation of two or more acetate molecules.

ΚΠ

1907 J. N. Collie in Proc. Chem. Soc. 23 230 It was shown how by uniting more than one of these groups, as in ethyl acetoacetate, H[CH₂·CO]₂OH, or in dehydracetic acid, H[CH₂·CO]₄OH, ‘polyketides’ are obtained.

1927 A. W. Stewart Rec. Adv. Org. Chem. (ed. 5) I. vi. 123 The polyketide derivatives yield members of the pyrone, benzopyrone, benzpyrene, pyridine, and isoquinolone series.

1978 J. Mann Secondary Metabolism vii. 298 The polyketide metabolite, juglone,..is responsible for the restricted growth of plant species under and around walnut trees.

1992 Jrnl. Org. Chem. 57 178/1 The biosynthesis of aromatic compounds in bacteria, fungi, and higher plants takes place either from acetate, by the polyketide pathway, or from glucose, by the shikimate pathway.

2002 Science 11 Oct. 347/3 Polyketide toxins..are typically produced by fish-killing dinoflagellates.

This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polyketide
释义	polyketiden. Brit. /ˌpɒlɪˈkiːtʌɪd/, U.S. /ˌpɑliˈkiˌtaɪd/ Origin: Formed within English, by derivation. Etymons: poly- comb. form, keto- comb. form, -ide suffix. Etymology: < poly- comb. form + keto- comb. form + -ide suffix. Chemistry and Biochemistry. An organic compound in which carbonyl groups alternate with single carbon atoms in a chain, thus: —CO—C—CO—C—.Such compounds typically result from the condensation of two or more acetate molecules. ΚΠ 1907 J. N. Collie in Proc. Chem. Soc. 23 230 It was shown how by uniting more than one of these groups, as in ethyl acetoacetate, H[CH₂·CO]₂OH, or in dehydracetic acid, H[CH₂·CO]₄OH, ‘polyketides’ are obtained. 1927 A. W. Stewart Rec. Adv. Org. Chem. (ed. 5) I. vi. 123 The polyketide derivatives yield members of the pyrone, benzopyrone, benzpyrene, pyridine, and isoquinolone series. 1978 J. Mann Secondary Metabolism vii. 298 The polyketide metabolite, juglone,..is responsible for the restricted growth of plant species under and around walnut trees. 1992 Jrnl. Org. Chem. 57 178/1 The biosynthesis of aromatic compounds in bacteria, fungi, and higher plants takes place either from acetate, by the polyketide pathway, or from glucose, by the shikimate pathway. 2002 Science 11 Oct. 347/3 Polyketide toxins..are typically produced by fish-killing dinoflagellates. This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1907
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