Studies on Acetylenic Compounds. XVII. Total Synthesis of dl-Ribose and dl-Arabinose.
نویسندگان
چکیده
منابع مشابه
Total synthesis of dl-19-nor-16,17-dehydroprogesterone.
dl-2-(7,11-Dimethyl-3,7,11 - trans,trans-dodecatrienyl)-3-methyl-cyclopent-2-enol was prepared by reduction of the corresponding ketone. This tetraenol, on treatment with trifluoroacetic acid, underwent stereoselective cyclization to give dl-3,17-dimethyl-A-nor-D-homoestra-3,16-diene. This tetracyclic material was readily converted, by oxidative cleavage to the bicyclic triketo aldehyde followe...
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In the structure of DL-proline, C5H9NO2, the molecules are connected via classical intermolecular N-H...O hydrogen bonds involving the amine and carboxyl groups [N...O = 2.7129 (15) and 2.8392 (16) A], and form chains along the b-axis direction and parallel to (-101). The chains are linked into sheets via weak non-classical hydrogen bonds. The conformation of the molecule and its packing are no...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1961
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.9.316