X and X' are each independently halogen, C₁-C₄alkyl, or C₂-C₄alkenyl; W, Y and Z are each independently O or S; and R and R₁ are as defined in Claim 1, methods for their preparation, herbicidal compositions containing them, and methods for the control of monocotyledenous plants, in particular of monocotyledenous weeds in the presence of cereal crops, by applying them.
摘要:
Compounds of the formula (II): or a salt thereof, wherein R is hydrogen or an alkyl group containing up to 6 carbon atoms; X is a covalent bond or oxygen; Y is -(CH 2 ) n - where n is 0 or an integer from 1 to 5 wherein one carbon atom not bound to the nitrogen atom may be optionally substituted with a hydroxy group; and Z is hydrogen or halogen are useful intermediates in the preparation of pharmacologically active compounds described in European Patent Application No 79302141.
摘要:
The present invention provides novel analogues of epicatechin and related polyphenols, their variously functionalized derivatives, process for preparation of the same, composition comprising these compounds and their method of use.
摘要:
Cette invention concerne de nouveaux procédés de préparation de composés chimiques, en particulier de composés fongicides, notamment de dérivés iodés de chromones, de préférence des composés de formule (I), ainsi que des composés intermédiaires utiles pour ces procédés.
摘要:
A chromone derivative represented by general formula (I) and an aldose reductase inhibitor containing the same as the active ingredient wherein R1 and R2 represent each lower alkyl, etc.; R3 represents oxygen, sulfur, etc.; R7 represents (un)substituted phenyl, etc.; and R4 represents hydrogen or lower alkoxy. This compound is excellent in the inhibition of aldose reductase and is useful for treating various complications accompanying diabetes.
摘要:
A chromone derivative represented by general formula (I) and an aldose reductase inhibitor containing the same as the active ingredient wherein R₁ and R₂ represent each lower alkyl, etc.; R₃ represents oxygen, sulfur, etc.; R₇ represents (un)substituted phenyl, etc.; and R₄ represents hydrogen or lower alkoxy. This compound is excellent in the inhibition of aldose reductase and is useful for treating various complications accompanying diabetes.
摘要:
Compounds of forumla (I) where one of Z and Y is CO and the other is C-W-R2 and the dotted line indicates a double bond is present where necessary to meet valency requirements, W is O, S(O)¿n?, N(R?3), N(R3)N(R4), N(R3¿)O or ON(R3); R1 is hydrogen, or an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or heterocyclyl group; R?2, R3 and R4¿, which may be the same or different, are as defined above for R1, or are acyl, or R?2 and R3 or R2 and R4 or R3 and R4¿ together with the nitrogen or oxygen to which they are attached form an optionally substituted ring which may contain other hetero atoms; each X, which may be the same as or different from any other X, is halogen, CN, NO¿2?, SF5, B(OH)2, trialkylsilyl or a group E, OE or S(O)nE where E is a group as defined hereinbefore for R?2¿ or is optionally substituted amino; or two adjacent groups X together with the atoms to which they are attached form an optionally substituted carbocyclic or heterocyclic ring; n is 0, 1 or 2; and p is 0 to 4 have fungicidal activity. Many of the compounds are novel.
摘要:
Compounds of forumla (I) where one of Z and Y is CO and the other is C-W-R2 and the dotted line indicates a double bond is present where necessary to meet valency requirements, W is O, S(O)¿n?, N(R?3), N(R3)N(R4), N(R3¿)O or ON(R3); R1 is hydrogen, or an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or heterocyclyl group; R?2, R3 and R4¿, which may be the same or different, are as defined above for R1, or are acyl, or R?2 and R3 or R2 and R4 or R3 and R4¿ together with the nitrogen or oxygen to which they are attached form an optionally substituted ring which may contain other hetero atoms; each X, which may be the same as or different from any other X, is halogen, CN, NO¿2?, SF5, B(OH)2, trialkylsilyl or a group E, OE or S(O)nE where E is a group as defined hereinbefore for R?2¿ or is optionally substituted amino; or two adjacent groups X together with the atoms to which they are attached form an optionally substituted carbocyclic or heterocyclic ring; n is 0, 1 or 2; and p is 0 to 4 have fungicidal activity. Many of the compounds are novel.