公开(公告)号：US4730051A

公开(公告)日：1988-03-08

申请号：US819144

申请日：1986-01-15

申请人： Yoichiro Ueda ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yoichiro Ueda ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A01N43/40 ,  C07D213/82 ,  C07D213/89 ,  C07D213/56

CPC分类号： C07D213/82 ,  A01N43/40 ,  C07D213/89

摘要： A compounds of the general formula (I): ##STR1## wherein R.sup.1 is alkyl, lower alkenyl, lower alkynyl, aralkyl, haloalkyl, lower alkoxy-lower alkyl, lower alkylthio-lower alkyl or lower alkoxycarbonyl-lower alkyl group; R.sup.2 is aryl group which may be substituted by one or more groups of halogen atom, lower alkyl, lower alkoxy, lower alkoxycarbonyl, trifluoromethyl, cyano and nitro group; R.sup.3 and R.sup.4 are, the same or different, lower alkyl, aralkyl, haloalkyl or cycloalkyl, or aryl group which may be substituted by one or more groups of halogen atom, lower alkyl, lower alkoxy, trifluoromethyl, cyano or nitro group; R.sup.5 is hydrogen atom, halogen atom, lower alkyl, phenyl which may be substituted or aralkyl which may be substituted; or R.sup.4 and R.sup.5 may be combined to form a group of --(CH.sub.2).sub.n - in which n is 3 or 4, or its 1-oxide or addition salt. which is useful as a plant growth inhibitory agent.

摘要翻译： 通式（I）的化合物：其中R 1为烷基，低级烯基，低级炔基，芳烷基，卤代烷基，低级烷氧基 - 低级烷基，低级烷硫基 - 低级烷基或低级烷氧基羰基 - 低级烷基。 R2是可以被一个或多个卤素原子，低级烷基，低级烷氧基，低级烷氧基羰基，三氟甲基，氰基和硝基取代的芳基; R 3和R 4是相同或不同的低级烷基，芳烷基，卤代烷基或环烷基，或可被一个或多个卤素原子，低级烷基，低级烷氧基，三氟甲基，氰基或硝基基团取代的芳基; R5为氢原子，卤素原子，低级烷基，可被取代的苯基或可被取代的芳烷基; 或者R 4和R 5可以组合形成其中n为3或4的 - （CH 2）n - 或其1-氧化物或加成盐的基团。 其可用作植物生长抑制剂。

公开(公告)号：US4730061A

公开(公告)日：1988-03-08

申请号：US815229

申请日：1985-12-31

申请人： Yoichiro Ueda ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yoichiro Ueda ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A61K31/415 ,  A61P9/00 ,  A61P9/06 ,  A61P9/12 ,  A61P25/04 ,  A61P29/00 ,  C07D233/50 ,  C07D309/38 ,  C07D309/22

CPC分类号： C07D309/38

摘要： A pyrone-3-carboxamide compound of the formula (I): ##STR1## in which R.sub.1 is an alkyl group, and R.sub.2 is an alkyl group or a halogen atom, which is useful as a medicine and an agricultural chemical or an intermediate thereof.

摘要翻译： 式（I）的吡喃酮-3-甲酰胺化合物：其中R 1是烷基，R 2是烷基或卤素原子，其可用作药物和农药或 其中间体。

公开(公告)号：US4725306A

公开(公告)日：1988-02-16

申请号：US789411

申请日：1985-10-21

申请人： Yoichiro Ueda ,  Yoshiyuki Hirako ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yoichiro Ueda ,  Yoshiyuki Hirako ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： C07D213/82 ,  A01N43/40 ,  C07D401/06 ,  C07D405/06

CPC分类号： C07D213/82

摘要： Novel pyridinecarboxamide compounds having the general formula (I) ##STR1## or salts thereof wherein R is alkoxy group, aralkyloxy group or a group of --(CH.sub.2).sub.n --R.sub.1 wherein n is an integer from 1 to 3 and R.sub.1 is hydroxy group, lower alkoxy group, mercapto group, lower alkylthio group, amino group, di-lower alkylamino group, C.sub.3-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, 5- or 6-membered heterocyclic group, or aryl group substituted by one or two substituents of halogen, lower alkyl or lower alkoxy; R.sub.2 and R.sub.3 bond at the 3,4 or 5 position of benzene ring and are, the same or different, hydrogen atom, halogen atom, cyano group, nitro group, amino group, lower alkyl group, halogenated lower alkyl group, hydroxy group, lower alkoxy group, aryloxy group, carboxy group or lower alkoxycarbonyl group, which possess plant growth inhibitory activities and also antiinflammatory activity.

摘要翻译： 具有通式（I）的新型吡啶甲酰胺化合物或其盐，其中R是烷氧基，芳烷氧基或 - （CH 2）n -R 1的基团，其中n是1至3的整数，R 1是 羟基，低级烷氧基，巯基，低级烷硫基，氨基，二低级烷基氨基，C3-11烷基，低级烯基，低级炔基，环烷基，5-或6-元杂环基，或 被一个或两个卤素，低级烷基或低级烷氧基取代基取代的芳基; R2和R3键在苯环的3,4或5位，并且相同或不同，为氢原子，卤素原子，氰基，硝基，氨基，低级烷基，卤代低级烷基，羟基， 低级烷氧基，芳氧基，羧基或低级烷氧基羰基，其具有植物生长抑制活性和抗炎活性。

公开(公告)号：US4777256A

公开(公告)日：1988-10-11

申请号：US816380

申请日：1986-01-06

申请人： Yoichiro Ueda ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yoichiro Ueda ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Yoshiyuki Hirako ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： C07D405/06 ,  A01N43/40 ,  C07D213/75 ,  C07D213/82 ,  C07D405/04 ,  C07D401/06

CPC分类号： C07D213/82 ,  A01N43/40 ,  C07D405/04

摘要： Novel 5-halopyridine-3-carboxamide compounds having the general formula (I) ##STR1## or salts thereof wherein R is hydrogen atom or a group of --(CH.sub.2).sub.n --R.sub.1 wherein n is an integer from 1 to 4 and R.sub.1 is hydrogen atom, hydroxy group, lower alkoxy group, mercapto group, lower alkylthio group, amino group, di-lower alkylamino group, C.sub.1-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, 5- or 6-membered heterocyclic group or aryl group which may be substituted by one or two substituents of halogen, lower alkyl or lower alkoxy;R.sub.2 and R.sub.3 are, the same of different, hydrogen atom, halogen atom, cyano group, nitro group, amino group, lower akyl group, halogenated lower alkyl group, hydroxy group, lower alkoxy group, aryloxy group, carboxy group or lower alkoxycarbonyl group;X is halogen atom; which compounds possess growth inhibitory activities and also anti-inflammatory activity.

摘要翻译： 具有通式（I）的新型5-卤代吡啶-3-甲酰胺化合物或其盐，其中R是氢原子或 - （CH 2）n -R 1基团，其中n是1至4的整数 R1为氢原子，羟基，低级烷氧基，巯基，低级烷硫基，氨基，二低级烷基氨基，C1〜11烷基，低级烯基，低级炔基，环烷基，5-或6 可被卤素，低级烷基或低级烷氧基的一个或两个取代基取代的杂环基或芳基; R2和R3是不同的氢原子，卤素原子，氰基，硝基，氨基，低级烷基，卤代低级烷基，羟基，低级烷氧基，芳氧基，羧基或低级烷氧羰基 ; X为卤素原子; 这些化合物具有生长抑制活性和抗炎活性。

公开(公告)号：US4744819A

公开(公告)日：1988-05-17

申请号：US789412

申请日：1985-10-21

申请人： Yoichiro Ueda ,  Yoshiyuki Hirako ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yoichiro Ueda ,  Yoshiyuki Hirako ,  Kazuhisa Masamoto ,  Yukihisa Goto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： C07D213/82 ,  A01N43/40 ,  C07D401/06 ,  C07D405/06

CPC分类号： C07D213/82

摘要： Novel pyridinecarboxamide derivatives having the general formula (I) ##STR1## or salts thereof wherein R is hydrogen atom, alkoxy group, aralkyloxy group or a group of --(CH.sub.2).sub.n --R.sub.1 wherein n is an interger from 1 to 3 and R.sub.1 is hydrogen atom, hydroxy group, lower alkoxy group, mercapto group, lower alkylthio group, amino group, di-lower alkylamino group, C.sub.3-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, 5- or 6-membered heterocyclic group, or aryl group which may be substituted by one or two substituents of halogen, lower alkyl or lower alkoxy;R.sub.2 is halogen atom, lower alkyl group, hydroxy group, lower alkoxy group, aryloxy group, carboxy group or lower alkoxycarbonyl group;R.sub.3 is hydrogen atom, halogen atom or lower alkyl group, which possess plant growth inhibitory activities and also anti-inflammatory activity.

摘要翻译： 具有通式（I）的新型吡啶甲酰胺衍生物（I）或其盐，其中R是氢原子，烷氧基，芳烷氧基或 - （CH 2）n -R 1基团，其中n是1至3的整数 R1为氢原子，羟基，低级烷氧基，巯基，低级烷硫基，氨基，二低级烷基氨基，C3-11烷基，低级烯基，低级炔基，环烷基，5-或6 或可被卤素，低级烷基或低级烷氧基的一个或两个取代基取代的芳基; R2是卤素原子，低级烷基，羟基，低级烷氧基，芳氧基，羧基或低级烷氧基羰基; R3是具有植物生长抑制活性和抗炎活性的氢原子，卤素原子或低级烷基。

公开(公告)号：US4936121A

公开(公告)日：1990-06-26

申请号：US256487

申请日：1988-10-12

申请人： Yukihisa Goto ,  Hiroshi Yagihara ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Yukihiro Sagawa ,  Hirokazu Osabe

发明人： Yukihisa Goto ,  Hiroshi Yagihara ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Yukihiro Sagawa ,  Hirokazu Osabe

IPC分类号： A01N43/90 ,  C07D455/02 ,  C07D471/04

CPC分类号： C07D471/04 ,  A01N43/90 ,  C07D455/02

摘要： A compound of the formula (I) ##STR1## where A is an alkylene or alkenylene group, R.sub.1 is an aryl group which may be substituted, R.sub.2 is a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halogenated lower alkyl group, a cycloalkyl group, a lower alkoxyalkyl group, a lower alkylthioalkyl group, a phenyl group which may be substituted or an aralkyl group which may be substituted, R.sub.3 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group or a halogenated lower alkyl group, or R.sub.2 and R.sub.3 may be combined to form a group of --(CH.sub.2).sub.n --(n is 3 or 4), or salt thereof, which is useful as a herbicide.

公开(公告)号：US4978385A

公开(公告)日：1990-12-18

申请号：US199187

申请日：1988-05-26

申请人： Hiroshi Yagihara ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Hiroshi Yagihara ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A01N43/40 ,  A01N43/42 ,  C07D213/82 ,  C07D213/89 ,  C07D215/54 ,  C07D221/04 ,  C07D405/04

CPC分类号： C07D213/82 ,  A01N43/40 ,  A01N43/42 ,  C07D213/89 ,  C07D215/54 ,  C07D221/04 ,  C07D405/04

摘要： A compound of the formual (I) ##STR1## or 1-oxide or salt thereof, whereinR.sub.1 is a C.sub.1-11 alkyl group, a lower alkenyl group, a phenyl or group which may be substituted, an aralkyl group whose nucleus may be substituted, a haloalkyl or a 5- or 6-membered heterocycle group;R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are, the same or different, hydrogen atom, a halogen atom, cyano group, nitro group, amino group, a lower alkyl group, a lower haloalkyl group, hydroxy group, a lower alkoxy group, an aryloxy group, carboxy group or a lower alkoxycarbonyl group;R.sub.7 is hydrogen atom, a halogen atom, a lower alkyl group, a phenyl group which may be substituted, an aralkyl group whose nucleus may be substituted, a lower alkenyl group, a lower alkynyl group, a lower alkoxy group or a haloalkyl group;R.sub.8 is a C.sub.1-11 alkyl group, a lower alkenyl group, a lower alkynyl group, a cycloalkyl group, a lower alkoxyalkyl group, a lower alkylthioalkyl group, a phenyl group which may be substituted, an aralkyl group whose nucleus may be substituted, a haloalkyl group or a 5 or 6 membered heterocycle group; or R.sub.7 and R.sub.8 may be combined to form a group of --(CH.sub.2).sub.m -- (m is 3 or 4); X is a halogen atom, which can be used as herbicidal compositions.

公开(公告)号：US4886546A

公开(公告)日：1989-12-12

申请号：US24348

申请日：1987-03-11

申请人： Hiroshi Yagihara ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Hiroshi Yagihara ,  Yukihisa Goto ,  Kazuhisa Masamoto ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A01N43/16 ,  A01N43/40 ,  C07D309/38 ,  C07D311/74 ,  C07D311/94 ,  C07D401/04 ,  C07D405/04

CPC分类号： C07D401/04 ,  A01N43/16 ,  A01N43/40 ,  C07D309/38 ,  C07D311/74 ,  C07D311/94

摘要： A compound of the formula (I) ##STR1## wherein (1) when R.sub.1 is a C.sub.2-11 alkyl, a lower alkenyl, a lower alkynyl, a cycloalkyl, a lower alkoxyalkyl, an aralkyl which may be substituted, a lower haloalkyl or a 5 or 6 membered heterocycle;R.sub.2, R.sub.3 and R.sub.4 are the same or different, hydrogen, a halogen, cyano, nitro, amino, a lower alkyl, a lower haloalkyl, hydroxy, a lower alkoxy, an aryloxy, carboxy, or a lower alkoxycarbonyl;R.sub.5 is hydrogen, a halogen, a C.sub.1-11 alkyl, an aryl which may be substituted, an aralkyl which may be substituted;R.sub.6 is a C.sub.1-11 alkyl, a lower alkenyl, a lower alkynyl, a cycloalkyl, a lower alkoxyalkyl, an aryl which may be substituted, an aralkyl which may be substituted, a lower haloalkyl, or a 5 or 6 membered heterocycle; or R.sub.5 and R.sub.6 may be combined to form a group of --(CH.sub.2).sub.m -- (m is 3 or 4);(2) when R.sub.1 is an aryl which may be substituted;R.sub.2, R.sub.3, R.sub.4 and R.sub.5 have the same meanings as defined above; R.sub.6 is a C.sub.1-11 alkyl, a lower alkenyl, a lower alkynyl, a cycloalkyl, a lower alkoxyalkyl, an aralkyl which may be substituted, a haloalkyl or a 5 or 6 membered heterocycle, or R.sub.5 and R.sub.6 may be combined to form a group of --(CH.sub.2).sub.m -- (m is 3 or 4);(3) when R.sub.1 is methyl;R.sub.2, R.sub.3, R.sub.4 and R.sub.5 have the same meanings as defined above; R.sub.6 is a C.sub.2-12 alkyl, a lower alkenyl, a lower alkynyl, a cycloalkyl, a lower alkoxyalkyl, an aryl which may be substituted, an aralkyl which may be substituted, a lower haloalkyl or a 5 or 6 membered heterocycle or R.sub.5 and R.sub.6 may be combined to form a group of --(CH.sub.2).sub.m -- (m is 3 or 4); or(4) when R.sub.1 and R.sub.6 are methyl;R.sub.2, R.sub.3 and R.sub.4 have the same meanings as defined above; R.sub.5 is a halogen, a C.sub.1-11 alkyl, an aryl which may be substituted or an aralkyl which may be substituted, which is useful as herbicide.

摘要翻译： 式（I）化合物其中（1）当R 1为C 2-11烷基时，低级链烯基，低级炔基，环烷基，低级烷氧基烷基，可被取代的芳烷基， 低级卤代烷基或5或6元杂环; R2，R3和R4相同或不同，氢，卤素，氰基，硝基，氨基，低级烷基，低级卤代烷基，羟基，低级烷氧基，芳氧基，羧基或低级烷氧基羰基。 R5是氢，卤素，C1-11烷基，可被取代的芳基，可被取代的芳烷基; R6是C1-11烷基，低级烯基，低级炔基，环烷基，低级烷氧基烷基，可被取代的芳基，可被取代的芳烷基，低级卤代烷基或5或6元杂环; 或者R 5和R 6可以组合形成 - （CH 2）m - （m为3或4）的基团。 （2）当R1是可被取代的芳基时; R2，R3，R4和R5具有与上述相同的含义; R6是C1-11烷基，低级烯基，低级炔基，环烷基，低级烷氧基烷基，可被取代的芳烷基，卤代烷基或5或6元杂环，或者R5和R6可以组合形成 - （CH 2）m - （m为3或4）; （3）当R1为甲基时; R2，R3，R4和R5具有与上述相同的含义; R6是C2-12烷基，低级链烯基，低级炔基，环烷基，低级烷氧基烷基，可被取代的芳基，可被取代的芳烷基，低级卤代烷基或5或6元杂环或R5和 R6可以组合形成 - （CH 2）m - （m为3或4）的基团。 或（4）当R 1和R 6为甲基时; R2，R3和R4具有与上述相同的含义; R5是卤素，C1-11烷基，可被取代的芳基或可被取代的芳烷基，其可用作除草剂。

公开(公告)号：US4844732A

公开(公告)日：1989-07-04

申请号：US922038

申请日：1986-10-20

申请人： Yukihisa Goto ,  Kazuhisa Masamoto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yukihisa Goto ,  Kazuhisa Masamoto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A61K31/44 ,  A01N43/40 ,  A01N43/42 ,  A61K31/4402 ,  A61K31/4418 ,  A61K31/4425 ,  A61K31/443 ,  A61K31/455 ,  A61K31/47 ,  A61P29/00 ,  C07D213/22 ,  C07D213/82 ,  C07D213/89 ,  C07D215/56 ,  C07D401/04 ,  C07D405/04 ,  C07D405/06

CPC分类号： C07D213/82 ,  A01N43/40 ,  C07D401/04 ,  C07D405/04

摘要： A compound of the formula (I) ##STR1## or a salt thereof, wherein R is hydrogen atom, phenyl group which may be substituted freely or a group of --(CH.sub.2).sub.n --R.sub.1 wherein n is an interger from 1 to 3 and R.sub.1 is hydrogen atom, hydroxy group, lower alkoxy group, mercapto group, lower alkylthio group, amino group, di-lower alkylamino group, C.sub.3-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, 5- or 6-membered heterocyclic group, or phenyl group which may be substituted by one or two substituents of halogen, lower alkyl or lower alkoxy; R.sub.2 and R.sub.7 are different, hydrogen atom, C.sub.1-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, lower alkoxyalkyl group, lower alkylthioalkyl group, phenyl group whch may be substiuted freely, aralkyl group whose nucleus may be substituted by one or two substituents of halogen, lower alkyl or lower alkoxy or haloalkyl gorup or 5- or 6-membered heterocyclic group; R.sub.3, R.sub.4 and R.sub.5 are, the same or different, hydrogen atom, halogen atom, cyano group, nitro group, amino group, lower alkyl group, lower haloalkyl group, hydroxy group, lower alkoxygroup, aryloxy group, carboxy group or lower alkoxycarbonyl group; R.sub.6 is hydrogen atom, halogen atom, lower alkyl group, phenyl group which may be substituted freely or aralkyl group which may be substituted freely; or R.sub.6 and R.sub.7 may be combined to form a group of --(CH.sub.2).sub.m --(m is 3 or 4), which is useful e.g., a plant growth inhibitor.

摘要翻译： 式（I）的化合物或其盐，其中R是氢原子，可以被取代的苯基或 - （CH 2）n -R 1的基团，其中n是1的整数 3，R1为氢原子，羟基，低级烷氧基，巯基，低级烷硫基，氨基，二低级烷基氨基，C3-11烷基，低级烯基，低级炔基，环烷基， 或6元杂环基，或可被卤素，低级烷基或低级烷氧基的一个或两个取代基取代的苯基; R2和R7不同，氢原子，C1-11烷基，低级烯基，低级炔基，环烷基，低级烷氧基烷基，低级烷基硫代烷基，苯基可以自由取代，其核可以被其取代的芳烷基 一个或两个卤素，低级烷基或低级烷氧基或卤代烷基取代基或5-或6-元杂环基; R3，R4和R5是相同或不同的氢原子，卤原子，氰基，硝基，氨基，低级烷基，低级卤代烷基，羟基，低级烷氧基，芳氧基，羧基或低级烷氧基羰基 ; R6是氢原子，卤素原子，低级烷基，可被取代的苯基或可以被取代的芳烷基; 或者R 6和R 7可以组合形成 - （CH 2）m - （m为3或4）的基团，其可用于例如植物生长抑制剂。

公开(公告)号：US4943314A

公开(公告)日：1990-07-24

申请号：US318818

申请日：1989-03-03

申请人： Yukihisa Goto ,  Kazuhisa Masamoto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

发明人： Yukihisa Goto ,  Kazuhisa Masamoto ,  Hiroshi Yagihara ,  Yasuo Morishima ,  Hirokazu Osabe

IPC分类号： A61K31/44 ,  A01N43/40 ,  A01N43/42 ,  A61K31/4402 ,  A61K31/4418 ,  A61K31/4425 ,  A61K31/443 ,  A61K31/455 ,  A61K31/47 ,  A61P29/00 ,  C07D213/22 ,  C07D213/82 ,  C07D213/89 ,  C07D215/56 ,  C07D401/04 ,  C07D405/04 ,  C07D405/06

CPC分类号： C07D213/82 ,  A01N43/40 ,  C07D401/04 ,  C07D405/04

摘要： A compound of the formula (I) ##STR1## or a salt thereof, wherein R is hydrogen atom, phenyl group which may be substituted freely or a group of --(CH.sub.2).sub.n --R.sub.1 wherein n is an interger from 1 to 3 and R.sub.1 is hydrogen atom, hydroxy group, lower alkoxy group, mercapto group, lower alkylthio group, amino group, di-lower alkylamino group, C.sub.3-11 alkyl group, lower alkenyl group, lower alkynyl group, cycloalkyl group, 5- or 6-membered heterocyclic group, or phenyl group which may be substituted by one or two substituents of halogen, lower alkyl or lower alkoxy;R.sub.2 and R.sub.7 are different, hydrogen atom, C.sub.1-11 alkyl group, lower alkenyl group, lower alkylyl group, cycloalkyl group, lower alkoxyalkyl group, lower alkylthioalkyl group, phenyl group which may be substituted freely, aralkyl group whose nucleus may be subsituted by one or two substituents of halogen, lower alkyl or lower alkoxy or haloalkyl group or 5- or 6-membered heterocyclic group;R.sub.3, R.sub.4 and R.sub.5 are, the same or different, hydrogen atom, halogen atom, cyano group, nitro group, amino group, lower alkyl group, lower haloalkyl group, hydroxy group, lower alkoxy group, aryloxy group, carboxy group or lower alkoxycarbonyl group;R.sub.6 is hydrogen atom, halogen atom, lower alkyl group, phenyl group which may be substituted freely or aralkyl group which may be substituted freely; orR.sub.6 and R.sub.7 may be combined to form a group of --(CH.sub.2).sub.m -- (m is 3 or 4), which is useful e.g., a plant growth inhibitor.