| 释义 |
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. |