By Thomas F. DeRosa
Advances in artificial natural Chemistry and strategies suggested in US Patents offers man made directions for getting ready present and commercially major natural compounds, derivatives, and intermediates as stated in issued US Patents. Industries surveyed contain agrochemical, cosmetics and private care items. every one access comprises vast info corresponding to specific laboratory instructions for getting ready all chemical intermediates and characterization facts. in addition, product optimization reports, commercial coaching, and new artificial tools were incorporated for chosen entries, in addition to projected examine instructions for destiny product improvement. In Advances in man made natural Chemistry and techniques suggested in US Patents the author's sensible process permits readers to spot examine and marketplace traits, and remain up to date on present advancements within the box. * presents man made directions for getting ready present and commercially major natural compounds, derivatives, and intermediates as suggested in issued US Patents * Identifies product improvement developments to aid be sure learn parts * Elucidates use of the USA Patent and Trademark place of work database
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Mair, US Patent 6,130,354 (October 10, 2000) 3. U. M. Friedman et al, US Patent 6,204,391 (March 20, 2001) Assignee: The Regents of the State of California Utility: Antiviral and Virucide to Inhibit Human Retroviral Replication Patent: Reaction i- Carbon tetrachloride, aluminum chloride, hydrochloric acid, sodium hydroxide ii- Ethyl alcohol, hydrazine, acetic acid iii- THF, nickel peroxide, sodium hydroxide, ethyl alcohol iv- C60 Buckminsterfullerene, toluene, THF, 1,2-dichlorobenzene v- Acetic acid, hydrochloric acid vi- Succinic anhydride, pyridine 33 ADVANCES IN SYNTHETIC ORGANIC CHEMISTRY 34 Experimental 1.
Two isomeric hydroxyl azides, (VIII), and, (IX), were produced when epoxide intermediates were reacted with sodium azide. Both isomers were subsequently converted to the desired aziridine. 7. In a previous investigation (1) the author proposed the synthesis of keto intermediate, (X), as an alternative to Step 8 of the current invention. 8. Methods for preparing skikimic acid (XI) from (−)-quinic acid are described (2). 9. Other methods for preparing ester and diamine analogues of the current invention are disclosed (3).
4- or 5-Sulfonylmethyl-3(2H)-furanone derivatives have also been prepared (2) as illustrated in Eq. 2: i- Sodium hydride, THF ii- m-Chloroperbenzoic acid ACIDS AND DERIVATIVES 17 4. 2,3,4,5-Tetrahydrofuran-2-one derivatives were previously prepared by the author by cyclization of (E)-3-(4-fluorophenyl)-3-(4-sulfamoyl-phenyl)-2-(2-hydroxylethyl)propen2-enoic acid, (I), and are discussed (3). References 1. E. Nicolai et al, US Patent 5,807,873 (September 15, 1998) 2. W. Felman et al, US Patent 5,389,673 (February 14, 1995) 3.