英语词汇seco-的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

seco- Chem.|ˈsɛkəʊ|[f. L. sec-āre to cut + -o.]A formative element used in naming derivatives, esp. of steroids, in which fission of a ring has occurred (see quot. 1951). Hence also as quasi-adj.1951R. S. Cahn et al. in Jrnl. Chem. Soc. 3535 Ring fission, with addition of a hydrogen atom at each terminal group thus created, shall be indicated by the prefix seco, the original steroid numbering being retained.1959L. F. & M. Fieser Steroids iv. 156 This was identified as the 2,3-secodicarboxylic acid..by saponification, oxidation to the 7-ketone, and Wolff-Kishner reduction to the known 2,3-secocholestane-2,3-dicarboxylic acid.1961I. E. Bush Chromatogr. Steroids ii. 102 The opening of rings to form seco-dicarboxylic acids.Ibid. vi. 342 The C₁₉ triols..are oxidized to the d-seco-16,17-dialdehydes.1977Lancet 16 Apr. 841/1 The physiological regulation of secretion of this seco-steroid by the kidney.

seco-
combining form
Etymology: Latin secare to cut + English -o-
: having an opened ring — in names of organic chemical compounds
< 2,3-secocholestane >

词汇	seco-
词根词缀	OED Webster seco- Chem.\|ˈsɛkəʊ\|[f. L. sec-āre to cut + -o.]A formative element used in naming derivatives, esp. of steroids, in which fission of a ring has occurred (see quot. 1951). Hence also as quasi-adj.1951R. S. Cahn et al. in Jrnl. Chem. Soc. 3535 Ring fission, with addition of a hydrogen atom at each terminal group thus created, shall be indicated by the prefix seco, the original steroid numbering being retained.1959L. F. & M. Fieser Steroids iv. 156 This was identified as the 2,3-secodicarboxylic acid..by saponification, oxidation to the 7-ketone, and Wolff-Kishner reduction to the known 2,3-secocholestane-2,3-dicarboxylic acid.1961I. E. Bush Chromatogr. Steroids ii. 102 The opening of rings to form seco-dicarboxylic acids.Ibid. vi. 342 The C₁₉ triols..are oxidized to the d-seco-16,17-dialdehydes.1977Lancet 16 Apr. 841/1 The physiological regulation of secretion of this seco-steroid by the kidney. seco- combining form Etymology: Latin secare to cut + English -o- : having an opened ring — in names of organic chemical compounds < 2,3-secocholestane >
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