92572-40-2Relevant academic research and scientific papers
A remarkable bismuth nitrate-catalyzed protection of carbonyl compounds
Srivastava, Neeta,Dasgupta, Swapan K.,Banik, Bimal K.
, p. 1191 - 1193 (2003)
Bismuth nitrate has been found to be an outstanding catalyst for the protection of carbonyl compounds as acetal, ketal, mixed ketal and thioketal with an excellent yield.
NOVEL COMPUNDS, PHARMACEUTICAL COMPOSITIONS CONTAINING SAME, AND METHODS OF USE FOR SAME
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Page 18, (2010/02/06)
A pharmaceutical composition comprising a phamaceurtical diluent and a compound of formula IV wherein R21= H, C1-C20 alkyl, cycloalkyl, alkenyl, aryl, arylalkyl, or alkylaryl, -CH2OR25, -C(O)R25, -CO(O)R25, -C(O)NR25R26, -CH2C(O)R25, or -CH2C(O)NHR25, where R25 and R26 are each independently H, C1-C10 alkyl, cycloalkyl, alkenyl, aryl, arylalkyl, or alkylaryl, optionally containing one or more halogen atoms. R22 = -OH, -OR27, -OCH2C(O)R27, -OCH2C(O)NHR27, -OC(O)R27, -OC(O)OR27, -OC(O)NHNH-R5, or -OC(O)NR27R28, where R27 and R28 are each independentlyH, C1 -C20 alkyl, cycloalkyl, alkenyl, aryl, arylalkyl, or alkylaryl, and where R27 and R28 can each optionally contain halogen atoms; R23 and R24, the same or different from each other, are C1-C20 alkyl, cycloalkyl, alkenyl, aryl, arylalkyl, or alkylaryl. Methods of using such formulations for the treatment of cancer, to effect weight loss, to treat microbially-based infections, to inhibit neuropeptide-Y and/or fatty acid synthase, and to stimulate CPT-1.
α-ALKYLATION OF α-HETEROSUBSTITUTED CARBOXYLIC ACIDS WITHOUT RACEMIZATION; EPC-SYNTHESES OF TERTIARY ALCOHOLS AND THIOLS
Seebach, Dieter,Naef, Reto,Calderari, Giorgio
, p. 1313 - 1324 (2007/10/02)
α-Hydroxy- and α-mercapto-carboxylic acids are condensed with pivalaldehyde to give 2-t-butyl-5-substituted-1,3-dioxolanones or 1,3-oxathiolanones (2); the predominate cis-isomers are separeted by crystallization.The cis-disubstituted heterocycles 2 derived from lactic, mandelic and malic acid funish, after deprotonation with LDA, reaction with electrophiles such as alkyl halides, aldehydes and ketones, and hydrolysis α-branched α-hydroxy-carboxylic acids (3, 6, 8, 9, 10).These result from an overall substitution of the proton in the α-CO position with retention of configuration.The optically active carboxylic acids are α-alkylated without racemization and without employment of a chiral auxiliary ("self-reproduction of chirality", Scheme 1).The diastereoselectivities (ds) are generally >95percent (Table 1, 2, and 20-25).
