摘要:
A process for preparing compounds represented by the following general formula (I) wherein X represents chlorine atom, bromine atom, or iodine atom, and R includes alkoxy group and amino group which comprises the step of allowing a compound represented by the formula: CH2═CXF react with a compound represented by the formula: N2CHCOR in the presence of a catalyst containing a metal atom such as a transition metal of group 8 together with chiral carboxylic-type or amide-type ligands to preferentially obtain a stereoisomer of the compound of the general formula (I) wherein the stereochemical configuration at the 1-position is S-configuration
摘要:
A compound represented by the following formula (1) or (3): ##STR1## is subjected to a catalytic hydrogenolysis reaction in the presence of a base and thus a compound represented by the following formula (2): ##STR2## wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and X represents a chlorine atom or a bromine atom; is easily produced. This compound is usable as an intermediate for the preparation of drugs.
摘要:
A process for preparing intermediate compound (VII), compound (VIII) and compound (XIV) which will be raw materials for the synthesis of a synthetic antibactrial compound, via compound (I) or compound (X) and then, compound (II), the compounds each being shown below; and novel compounds useful for the preparation.
摘要:
A process for preparing intermediate compound (VII), compound (VIII) and compound (XIV) which will be raw materials for the synthesis of a synthetic antibactrial compound, via compound (I) or compound (X) and then, compound (II), the compounds each being shown below; and novel compounds useful for the preparation.
摘要:
Through a production process according to the following reaction scheme, compounds (2) which are useful for antibacterial agents can be provided at low cost and high yield.
摘要:
A method of industrially advantageously producing a cyclopropane monoacetal derivative represented by the formula (III) conveniently and also in a fewer steps by reacting a halogenated unsaturated carbonyl compound represented by the formula (II) with an alcoholate. wherein each symbol is as defined in the specification.
摘要:
This invention is to provide a compound represented by the following formula (I) and a compound represented by the following formula (II) useful as an antibacterial agent which is obtained by the compound of formula (I), and also to provide a novel synthetic process for the inexpensive, short-step and industrially advantageous production thereof. ##STR1##
摘要:
The present invention provides a method for industrially advantageously producing a halogenated unsaturated carbonyl compound without environment problems. A production method of a halogenated unsaturated carbonyl compound represented by the formula (III) is provided, which includes reacting an alkoxy-cyclic ether represented by the formula (I) with an acid halide represented by the formula (II) wherein each symbol is as defined in the specification.
摘要:
This invention relates to methods for the efficient production of quinolonecarboxylic acid based synthetic antibacterial agents which are expected for applications such as excellent medicaments and agricultural chemicals and to intermediate compounds to be used therein. According to the present invention, an amine substituent as the 7-position substituent of the quinolonecarboxylic acid derivative can be efficiently introduced.
摘要:
A method of industrially advantageously producing a cyclopropane monoacetal derivative represented by the formula (III) conveniently and also in a fewer steps by reacting a halogenated unsaturated carbonyl compound represented by the formula (II) with an alcoholate. wherein each symbol is as defined in the specification.