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Määritelmät

Substantiivi

  1. (chemistry) Any of several effects, most common in organic chemistry, in which the structure or reactivity of a molecule is affected by the physical size and proximity of neighbouring parts of the molecule.

Taivutusmuodot

Monikkosteric hindrances

(chemistry) Any of several effects, most common in organic chemistry, in which the structure or reactivity of a molecule is affected by the physical size and proximity of neighbouring parts of the molecule.

Regioselective dimethoxytritylation of the primary 5'-hydroxyl group of thymidine in the presence of a free secondary 3'-hydroxy group as a result of steric hindrance due to the dimethoxytrityl group and the ribose ring (Py = pyridine).