Ring pucker is a technical term used in chemistry. In sugar chemistry, five-membered rings such as the furanose form of ribose are more flexible and have a greater tendency to pucker than six-membered rings such as the pyranose form of glucose. Whereas the six-membered ring adopts a stable chair or boat conformation (see conformational isomerism) enhancing the anomeric effect, five-membered ring pucker results in sugars and sugar analogs of the furanose form having a less pronounced anomeric effect.
Famous quotes containing the word ring:
“The world,—this shadow of the soul, or other me, lies wide around. Its attractions are the keys which unlock my thoughts and make me acquainted with myself. I run eagerly into this resounding tumult. I grasp the hands of those next to me, and take my place in the ring to suffer and to work, taught by an instinct, that so shall the dumb abyss be vocal with speech.”
—Ralph Waldo Emerson (1803–1882)