摘要:
A method to make levulinic acid (LA), furfural, or gamma-valerolactone (GVL). React cellulose (and/or other C6 carbohydrates) or xylose (and/or other C5 carbohydrates) or combinations thereof in a monophasic reaction medium comprising GVL and an acid; or (ii) a biphasic reaction system comprising an organic layer comprising GVL, and a substantially immiscible aqueous layer. At least a portion of the cellulose (and/or other C6 carbohydrates), if present, is converted to LA and at least a portion of the xylose (and/or other C5 carbohydrates), if present, is converted into furfural.
摘要:
(5-Nitro-2-furyl)vinylene-2-trimethylammonium bromide having the formula ##STR1## is suitable as a starting raw material for a plurality of syntheses of 5-nitro-2-furyl ethylene compounds possessing an antibacterial effect. The method of preparing the bromide involves reacting 1-(5-nitro-2-furyl)-2-bromoethylene with trimethylamine in an organic solvent medium at a temperature of from -10 .degree. to +50.degree. C.
摘要:
The compounds of this invention are novel alkanimidoylthioureas having antifertility activity. They are prepared by the reaction of appropriate alkanamidines with appropriate isothiocyanates.
摘要:
It has been found that cycloheximide production by a culture of Streptomyces griseus is maintained and total yields of the antibiotic are increased when a glucose feed is begun at about 48 hrs. and continued until the culture becomes senescent at about 8 to 10 days.
摘要:
NITRONE DERIVATIVES HAVING ANTI-MICROBIAL ACTIVITY COMPRISING COMPOUNDS OF THE FORMULA
(5-(O2N-)-FUR-2-YL)-(CH=CH)N-C(-R'')=N(=O)-R
WHEREIN N IS 0 OR 1, R1 IS AN ALKYL OF 1 TO 4 CARBON ATOMS, R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A-(OH)M AND A-X, WHEREIN A IS AN ALKYL HAVING 1 TO 6 CARBON ATOMS, X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND FURYL, AND M IS AN INTEGER OF 1 TO 3 WHEN N IS 1 AND AN INTEGER OF 2 OR 3 WHEN N IS 0.
THEIR SALTS AND QUATERNARY AMMONIUM COMPOUNDS, AS WELL AS THEIR OPTICALLY ACTIVE ISOMERS OR DIASTEREOMERS WHEREIN R1 TO R4 REPRESENT HYDROGEN, HALOGEN, LOWER ALKYL, ARALKYL, PHENYL, HYDROXYL, LOWER ALKOXY, NITRO OR LOWER CARBOALKOXY, R5 AND R6 ARE HYDROGEN OR METHYL, R7 AND R8 ARE HYDROGEN, HALOGEN OR LOWER ALKOXY, X IS A HETEROCYCLIC RING SYSTEM, MONO- OR CONDENSED BICYCLIC, WITH 1-4 HETERO ATOMS, IN WHICH THE INDIVIDUAL RINGS HAVE 5 TO 6 MEMBERS AND CAN ALSO CONTAIN 1 OR MORE CARBONYL GROUPS, Y IS -CO- OR -CH(OH)-. THESE COMPOUNDS HAVE PHARMACOLOGICAL ACTIVITY IN THAT THEY INCREASE THE CORONARY BLOOD FLOW BY SIMULTANEOUSLY CAUSING DILATION OF THE CORONARIES AND AN INCREASE IN CONTRACTION STRENGTH.
(R7,R8-PHENYL)-CH(-OH)-CH(-R6)-NH-CH2-CH(-R5)-Y- COMPOUNDS OF THE FORMULA
摘要:
2-NITROIMIDAZOLES SUBSTITUTED IN THE 1-POSITION WITH A LOWER ALKYL AMIDE OR A LOWER ALKYL AMINE WHICH ARE USEFUL AS GERMICIDES AND ANTI-PROTOZOAL AGENTS.