33646-32-1Relevant articles and documents
NOVEL 6-BRIDGED HETEROARYLDIHYDROPYRIMIDINES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION
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Paragraph 1000, (2014/12/09)
The invention provides novel compounds having the general formula: wherein R1, R2, R3 and R4 are as defined in the description and in the claims, as well as or pharmaceutically acceptable salts, or tautomerism isomers, or enantiomers, or diastereomers thereof. The invention also contains compositions including the compounds and methods of using the compounds.
Structural determinants of substrates and inhibitors: Probing glutamate transporters with 2,4-methanopyrrolidine-2,4-dicarboxylate
Esslinger, C. Sean,Koch, Hans P.,Kavanaugh, Michael P.,Philips, Dean P.,Chamberlin, A. Richard,Thompson, Charles M.,Bridges, Richard J.
, p. 3101 - 3106 (2007/10/03)
Using an intramolecular [2+2] photocyclization, 2,4-methanopyrrolidine- 2,4-dicarboxylate was prepared as a conformationally locked analogue of glutamate. This compound, in combination with two other pyrrolidine dicarboxylates, has been used to define the structural elements that differentiate substrate and nonsubstrate inhibitors of a high-affinity, sodium-dependent glutamate transporter.
REGIOSELECTIVE CHLORINATION OF VALINE DERIVATIVES
Bowman, Nigel J.,Hay, Michael P.,Love, Stephen G.,Easton, Christopher J.
, p. 259 - 264 (2007/10/02)
Reaction of N-benzoylvaline methyl ester (5a) with sulphuryl chloride gave the β-chlorovaline derivative (6a) and lesser amounts of diastereoisomers of the γ-chlorovaline derivative (7a).A similar mixture of products was obtained throuch photolysis of the N-chloroamide (13).The reactions of the valine derivatives (5a) and (13) involve regioselective intermolecular transfer of the β-valinyl hydrogen.There is no evidence for reaction at the α-position.The β-chloroalanine derivative (23) was produced through reaction of N-benzoylalanine methyl ester (17a) with sulphuryl chloride and by photolysis of the N-chloroamide (22).Chlorination of the azetidinone (16a) gave (16b) in modest yield.These reactions establish the chemical validity of a regiospecific hydrogen-atom abstraction proposed in penicillin biosynthesis.
SYNTHESIS OF 2,4-METHANOPROLINE
Hughes, Philip,Martin, Michael,Clardy, Jon
, p. 4579 - 4580 (2007/10/02)
An efficient synthesis of 2,4-methanoproline from serine is described.The cyclobutane is formed by a sensitized intramolecular photoaddition.