title: Studies on flavonoid metabolism. Biosynthesis of (+)-[14C]catechin by the plant Uncaria gambir Roxb.
abstract: 1. The formation of (+)-[(14)C]catechin has been demonstrated in Uncaria gambir after the administration of (14)CO(2) and [1-(14)C]acetate. 2. By alkaline degradation to phloroglucinol and protocatechuic acid it has been shown that administration of (14)CO(2) resulted in equal labelling of the A and B rings of catechin, whereas [1-(14)C]-acetate gave rise to labelling largely in the A ring. 3. Incorporation of (14)C from both (14)CO(2) and [1-(14)C]acetate into (+)-catechin was greater in young than in older leaves.
mesh_terms: D000085:Acetates / Q000378:metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D002247:Carbon Isotopes; D002392:Catechin / Q000378:metabolism*; D002854:Chromatography, Paper; D006128:Growth; D010696:Phloroglucinol / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D013053:Spectrophotometry
chemical_list: D000085:Acetates; D002247:Carbon Isotopes; D002245:Carbon Dioxide; D002392:Catechin; D010696:Phloroglucinol