• The basic structure of the hydrophobic retinoid molecule consists of a cyclic end group, a polyene side chain and a polar end group. (wikipedia.org)
  • The π - electrons are completely delocalized over the entire cyclic molecule which can be considered as electrons in a ring. (wjpr.net)
  • These two isomers can change from c,t to t,t structure with exchange of the hydroperoxide group from C9 to C13 or vice versa but keep the conjugated diene structure, thus, four major products are found. (gerli.com)
  • If you have a strong base, then the conjugate acid must be weak and vice versa. (hackorganicchemistry.com)
  • They are also able to produce cyclic peroxides by addition of singlet oxygen to their conjugated dienes. (gerli.com)
  • A cooperative catalytic process through Palladium and Brønsted acid activation has been developed for the conjugate addition of cyclic ß -keto esters 2 to azoalkenes 1 directly followed by hemiaminal formation upon cyclization. (uni-leipzig.de)
  • The conjugated system formed by alternating C=C double bonds in the polyene side chain are responsible for the color of retinoids (typically yellow, orange, or red). (wikipedia.org)
  • These are cyclic conjugated oligomers, which posses alternate double bonds. (wjpr.net)
  • Photo-oxidation generates a mixture of four derivatives (amounts from 16 to 35% of the total products) with the OOH radical on the 9, 10, 12 or 13 carbon atom (double bonds in 10t12c, 8t12c, 9c13t, and 9c11t, respectively), two of these containing a conjugated diene system (9- and 13-OOH). (gerli.com)
  • Antibiotics possessing the β-lactam structure, which is a cyclic amide, are hydrolyzed rapidly by ring opening of the β -lactam group. (pharmacy180.com)
  • Diels-Alder reactions are cycloadditions which occur between a diene and a conjugated alkene, known as the dienophile. (chemtube3d.com)
  • Compounds consisting of a short peptide chain conjugated with an acyl chain. (lookformedical.com)
  • A number of new synthetic methods for pi-conjugated oligoene and enyne compounds are described. (unboundmedicine.com)
  • AU - Satoh,Tetsuya, AU - Tsurugi,Hayato, AU - Miura,Masahiro, PY - 2008/10/30/pubmed PY - 2008/12/17/medline PY - 2008/10/30/entrez SP - 326 EP - 36 JF - Chemical record (New York, N.Y.) JO - Chem Rec VL - 8 IS - 5 N2 - A number of new synthetic methods for pi-conjugated oligoene and enyne compounds are described. (unboundmedicine.com)
  • [3] Aromatic compounds are often drawn as cyclic alkenes, but their structure and properties are different and they are not considered to be alkenes. (everipedia.org)
  • In organic chemistry, Fatty Acyls are a class of organic compounds in the lipids and lipid-like molecules superclass , synthesized by chain elongation of an acetyl-CoA primer with malonyl-CoA (or methylmalonyl-CoA) groups that might contain a cyclic functionality and/or are substituted with heteroatoms . (wellnessadvantage.com)
  • Frontier orbital analysis of two conjugated, cyclic polyenes held face-to-face in close proximity suggests that when both polyenes have 4nπ-electron systems the interaction will be stabilizing, whereas when both have (4n+2)π-electron systems the interaction will be destabilizing[¹]. (tu-darmstadt.de)
  • The basic structure of the hydrophobic retinoid molecule consists of a cyclic end group, a polyene side chain and a polar end group. (wikipedia.org)
  • Look for a six-membered ring with a double bond inside the ring and a conjugating group outside the ring on the opposite side to the double bond. (chemtube3d.com)
  • The conjugated system formed by alternating C=C double bonds in the polyene side chain are responsible for the color of retinoids (typically yellow, orange, or red). (wikipedia.org)