7048-41-1Relevant articles and documents
8-OXOADENINE COMPOUND
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Page/Page column 144-145, (2010/11/24)
An 8-oxoadenine compound useful as an immuno-modulator having specific activity against Th1/Th2, specifically a prophylactic and therapeutic agent for a topical application for allergic diseases, viral siseases and cancers, which is represented by the following formula (1): , wherein A is a group of a formula represented by the formula (2): , wherein R2 is a substituted or unsubstituted alkyl group and so on, R3 is hydrogen atom or an alkyl group, R is a halogen atom and so on, n is 0-2, X1 is oxygen atom, Z is straight or branched chain alkylene, and R1 is an alkyl group which is optionally substituted by hydroxy group, an alkoxy group, alkoxycarbonyl group and so on, or its pharmaceutically acceptable salt.
Synthesis of a novel 1,4-bridged calix[8]arene 'host' cavity
Tsantrizos, Youla S.,Chew, Warren,Colebrook, Lawrence D.,Sauriol, Francoise
, p. 5411 - 5414 (2007/10/03)
A conformationally stable, acridone-based linker (1) was synthesized and attached to p-tert-butylcalix[8]arene (2) to form the novel 1,4-bridged calix[8] arene derivative 3. The structural assignment of 3 was based on its MS and high-field NMR data and su
Photochemistry of Stilbenes. 8. Eliminative Photocyclization of o-Methoxystilbenes
Mallory, Frank B.,Rudolph, M. Jonathan,Oh, Soon M.
, p. 4619 - 4626 (2007/10/02)
The synthetic value of the eliminative photocyclization of o-methoxystilbenes to give phenanthrenes with loss of the element of methanol has been enhanced by the use of tert-butyl alcohol as the solvent and sulfuric acid as a catalyst. 2-Methoxy-5-X-stilbenes and 2-methoxy-3-X-stilbenes undergo this photoreaction to produce the corresponding 2-X-phenanthrenes and 4-X-phenanthrenes, respectively.This regioselective photochemical route to these particular types of substituted phenanthrenes represents an improvement synthetically over the well-known oxidative photocyclization method with meta-substituted stilbenes, from which approximately 1:1 mixtures of 2-substituted and 4-substituted phenanthrenes usually are obtained.An attempt to extend the scope of this eliminative photocyclization method to the synthesis of benzanthracene by the ultraviolet irradiation of 3-methoxy-2-styrylnaphthalene was not successful, but this synthetic objective was achieved in an alternative way by the eliminative photocyclization of 5,6,7,8-tetrahydro-3-methoxy-2-styrylnaphthalene followed by oxidation of the resulting 8,9,10,11-tetrahydrobenzanthracene with DDQ.