(en'dō-sī'klik, -sik'lik),
Within a cycle or ring, for example, the six carbon atoms of the benzene ring in toluene. Compare: exocyclic.
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Surrounding 1161[cm.sup.-1] are located peaks related to the sum of lactose (tertiary alcohol vC-OH) and monosaccharide (endocyclic oxygen vC-O) signals (Figure 1) [29].
The 3-benzyl-1,3-thiazolidine2-thione ligand offers three types of donor atoms which are thiocarbonyl sulfur atom, the nitrogen atom, and the endocyclic sulfur atom.
The bond lengths show the endocyclic N2-C7 bond is shorter than the exo cyclic N1-C7 bond, the N1-C1 bond length is quite long 1.416(3)A.
The HOCl-induced oxidation of nucleic acids in a DNA strand normally affects the nitrogenous base either at the primary nitrogen ("exocyclic") in adenosine, guanosine, or cytosine or at the secondary nitrogen ("endocyclic") in guanosine, uridine, or thymidine, the reaction at the endocyclic nitrogen seemingly being preferred [11].
Loew (1994).Reaction mechanisms of formaldehyde with endocyclic Imino groups of nucleic acid bases.
Key statement: A rubber material is described, modified with a barrier material in the form of a copolymer which can be produced via ring-opening metathesis polymerization of a) at least one olefin monomer selected from the group consisting of monocyclic olefin monomers having one or two endocyclic C--C double bonds and bicyclic olefin monomers having one endocyclic C--C double bond and b) at least one polycyclic olefin monomer having at least two C--C double bonds.
The visceral mass consists of a helically twisted endocyclic type digestive tube and a centrally located axial organ.
cis- and trans-decalin are the hydrogenation products which further gived ROCP and cracking (CR) products by hydrogenolysis of endocyclic C-C bond of decalin (ROCP and CR products are not shown in Scheme 1).
These carbohydrate mimics substitute the endocyclic oxygen of sugars with a basic nitrogen atom.
Hydrogenation in the presence of palladium on carbon catalyst removes the endocyclic olefin, and the stereochemistry at the alcohol was inverted by converting it into the mesylate, which was then displaced with cesium acetate.
These studies revealed a pattern of endocyclic selection, that is, opposing directional selection episodes on gene arrangement frequencies during the life cycle.