M ring

Cycloalkenes that have trans double bonds m rings smaller than 12 mem bers are less stable than their cis stereoisomers trans Cyclooctene can be isolated and stored at room temperature but trans cycloheptene is not stable above -30°C... 

FIGURE 17. 33 A model of the flagellar motor assembly of Escherichia coli. The M ring carries an array of about 100 motB proteins at its periphery. These juxtapose with motA proteins in the protein complex that snrronnds the ring assembly. Motion of protons throngh the motA/motB complexes drives the rotation of the rings and the associated rod and helical filament. 

Atom-kem, m. atomic nucleus, -kette,/. chain of atoms, atomic chain, -lage, /. atomic layer atomic position, -lehre, /, doctrine of atoms, atomic theory, -mechanik, /. mechanics of the atom, -modell, n, atomic model, -nummer, /, atomic number, -ord-nung, /. atomic arrangement, -refraktion, /. atomic refraction, -rest, m. atomic residue (= Atomrumpf). -ring, m. ring of atoms, -rumpf, m. atomic residue or core (remainder of an atom, as after removal of some electrons), -schale, /, atomic shell, -strabl, m. atomic ray, -tafel, /, atomic table, atomtbeoretisch, a. of or according to the atomic theory,... 

Eranz-. (Anat.) coronary, coronal, -brenner, m. ring burner, crown burner. 

Nach-hut, /. rear, rear guard, -impftmg, /. reinoculation. -iniektion, /. reinfection, -klang, m. ring, echo resonance. 

Reif, m. ring, hoop tire collar hoarfrost. Reife, /. ripeness maturity (of beer, etc.) age puberty, -grad, m. degree of ripeness. 

Reifen, m. ring, hoop tire collar, reifenartig, a. ring-like, hoop-like. Reifen-mischtmg, /. (Rubber) tire stock, -re-generat, n. (Rubber) tire reclaim, -schlauch, m. inner tube (of a tire). 

Ring, m. ring cycle link coil collar, band, hoop, loop. 

Ring-schliessung, /., -schiuss, m, ring closure, cyClia ation. 

Okada, M. Ring-Opening Polymerization of Bicyclic and Spiro Compounds. Vol. 102, pp. 1-46. 

Sumitomo, H. and Okada, M. Ring-Opering Polymerization of Bicyclic Acetals, Oxalactone, and Oxalactam. Vol. 28, pp. 47—82. 

Ekins S, VandenBranden M, Ring BJ, Wrighton SA. Examination of purported probes of human CYP2B6. Pharmacogenetics 1997 7 165-79. 

Meng, Q., Hesse, M. Ring Closure Methods in the Synthesis of Macrocyclic Natural Products. 161, 107-176 (1991). 

In another example, Hg(OTf)2 has been used for the stereoselective ring expansion of 116 to 117 with excellent stereospecificity for the (Z)-isomer (Equation (43)).156 Carbomercuration reactions have also been observed for derivatives such as 118, which possesses both an allylic silane as well as an alkynyl functionality. For 118, the reaction affords the 5-m -ring compound 119 as the (Z)-isomer. Formation of the (/. )-isomcr is disfavored because the bulk of the TMS group precludes an anti-attack (Equation (44)).157... 

JoAZEiRO, C. A. and Weissman, A. M. RING finger proteins mediators of ubiquitin ligase activity. Cell 2000, 102, 549-52. 

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