Total Syntheses of Natural Products Containing .ALPHA.-Substituted .ALPHA.-Amino Acid Structures from Aldohexoses Using Overman Rearrangement as the Key Reaction
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چکیده
منابع مشابه
Total syntheses of natural products containing spirocarbocycles.
The structures of natural products from a variety of sources contain spirocycles, two rings that share a common atom. The spiro motif is finding increasing inclusion in drug candidates, and as a structural component in several promising classes of chiral ligands used in asymmetric synthesis. Total syntheses of products containing all-carbon spirocycles feature several common methods of ring clo...
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Addition of Potassium cyanide to a mixture of Schiff base and lithium perchlorate afforded a-aminonitriles in high yields. Addition of potassium cyanide to a methanolic solution of Schiff base and phosphoric acid afforded a-aminonitriles. When the reaction mixture was refluxed it gave a-amino acids in high yields.
متن کاملone pot synthesis of alpha-aminonitrile and alpha-amino acid from schiff bases
addition of potassium cyanide to a mixture of schiff base and lithium perchlorate afforded a-aminonitriles in high yields. addition of potassium cyanide to a methanolic solution of schiff base and phosphoric acid afforded a-aminonitriles. when the reaction mixture was refluxed it gave a-amino acids in high yields.
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Background: This study consists of two parts. The first part deals with both qualitative and quantitative analysis of 226Ra using alpha spectrometry measurement method. In the second part, the percentage of radioactive equilibrium between 226 Ra and its daughter products were determined by alpha spectrometry and total alpha measurement system after elapsed time of 15 days from precipitation. Ma...
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Two bioactive xanthones from Hypericum perforatum have been synthesized by direct routes. Benzo[c]xanthone 5 can be prepared from intermediate 4.
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ژورنال
عنوان ژورنال: Journal of Synthetic Organic Chemistry, Japan
سال: 2004
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.62.693