Synthesis of 2-Ethyl-3, 6, 7, 8-tetrahydroxy-1, 4-naphthoquinone

Synthesis of new polyurethanes based on 5, 6, 7, 8 – tetrabromo – 2, 3 – dihydro – 1, 4 – phthalazine dione

In this work, 5,6,7,8-Tetrabromo-2,3-dihydro-2,3-bis(2-hydroxyethyl)phthalazine-1,4-dione is synthesized by the reaction of 5,6,7,8-tetrabromo-2,3-dihydrophthalazine-1,4-dione with 2-bromoethanol in the presence of triethylamine. The obtained monomer was polymerized with different diisocyanates, including hexamethylenediisocyanate (HMDI), tolylene-2,4-diisocyanate (TDI), isophoronediisocyanate ...

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27 A 3,204 bp full-length cDNA of bovine NALP9 was cloned and its genomic organisation was 28 analyzed. The 2,988 bp open reading frame covers 9 exons and encodes a deduced protein of 996 29 amino acids containing Pyrin, Nacht and leucine-rich repeat domains like the human NALP gene 30 family members. Mapping with the WGRH5000 panel and fluorescence in situ hybridisation 31 assigned NALP9 in cl...

Ethyl 7-chloro-1-cyclo­propyl-6-fluoro-8-nitro-4-oxo-1,4-dihydro­quinoline-3-carboxyl­ate

In the title compound, C(15)H(12)ClFN(2)O(5), mol-ecules are packed in the crystal lattice in a parallel fashion sustained by various C-H⋯O [C⋯O = 3.065 (5)-3.537 (5) Å] and C-H⋯Cl [3.431 (5)-3.735 (4) Å] inter-actions.

Ethyl 7-amino-1-cyclo­propyl-6-fluoro-8-meth­oxy-4-oxo-1,4-dihydro­quinoline-3-carboxyl­ate monohydrate

In the title compound, C(16)H(17)FN(2)O(4)·H(2)O, the dihedral angle between the heterocyclic ring and the benzene ring is 5.77 (9)°, that between the heterocycle and the ethoxy-carbonyl plane is 15.5 (1)°, and that between the heterocyclic ring and the cyclopropane ring is 67.75 (13)°. In the crystal structure, mol-ecules are linked into a ribbon-like structure along the c axis by N-H⋯O and O-...