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1. 发明授权

US4841091A Process for producing 16-substituted prostaglandin es. 失效
标题翻译：生产16-取代的前列腺素的方法。
公开(公告)号：US4841091A
公开(公告)日：1989-06-20
申请号：US913889
申请日：1986-09-29
申请人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi , Masahiro Koga
发明人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi , Masahiro Koga
IPC分类号： C07C405/00
CPC分类号： C07C405/0033 , C07C405/00
摘要： A novel process for manufacturing 16-substituted .DELTA..sup.7 -prostaglandin Es, which include compounds expressed by the following formula (I), their enanantiomers, or their mixtures of arbitray mixing ratio, ##STR1## wherein R.sup.1 indicates COOR.sup.2, CH.sub.2 OR.sup.3, in which R.sup.2 indicates a hydrogen atom, a dubstituted or unsubstituted C.sub.1 -C.sub.10 alkyl group, a substituted or unsubstituted C.sub.3 -C.sub.10 cycloalkyl group, or a substituted or unsubstituted phenyl group, and R.sup.3 indicates a hydrogen atom, a tri(C.sub.1 -C.sub.7) hydrocarbon silyl group, a group which forms an acetal bond together with the oxygen atom of a hydroxyl group, or a C.sub.2 -C.sub.7 acyl group; R.sup.4 and R.sup.5 are identical or different, each representing a hydrogen atom, a tri(C.sub.1 -C.sub.7 ) hydrocarbon silyl group, or a group which forms an acetal bond together with the oxygen atom of a hydroxyl group; R.sup.6 indicates a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, or a vinyl group; R.sup.7 indicates a linear or branched C.sub.3 -C.sub.8 alkyl group, an alkyenyl group, or an alkynyl group, which may contain an oxygen atom; a phenyl group, a phenoxy group, or a C.sub.3 -C.sub.10 cycloalkyl group, which may be substituted; or a linear or branched C.sub.1 -C.sub.5 alkyl group which is substituted by a C.sub.1 -C.sub.6 alkoxy group, a phenyl group a phenoxy group, or a C.sub.3 -C.sub.10 cycloalkyl group, which may be substituted; and Y indicates CH.sub.2 X or XCH.sub.2, in which X represents an ethylene group, a cis -or trans-vinylene group, or an ethynylene group.
摘要翻译： PCT No.PCT / JP86 / 00034 Sec。 371日期1986年9月29日第 102（e）1986年9月29日PCT PCT公布1986年1月28日PCT公布。出版物WO86 / 04330 日期：1986年7月31日。一种用于制备16取代的DELTA 7-前列腺素Es的新方法，其包括由下式（I）表示的化合物，其对映异构体或其混合比的混合物，其中R1表示COOR2，CH2OR3，其中R2表示氢原子，取代或未取代的C1-C10烷基，取代或未取代的C3-C10环烷基或取代或未取代的苯基，R3表示氢原子，三（C 1 -C 7）烃甲硅烷基，与羟基的氧原子一起形成缩醛键的基团或C 2 -C 7酰基; R4和R5相同或不同，各自表示氢原子，三（C1-C7）烃甲硅烷基，或与羟基的氧原子一起形成缩醛键的基团; R6表示氢原子，C1-C4烷基或乙烯基; R7表示可含有氧原子的直链或支链C 3 -C 8烷基，链烯基或炔基; 可被取代的苯基，苯氧基或C3-C10环烷基; 或被可被取代的C1-C6烷氧基，苯基苯氧基或C3-C10环烷基取代的直链或支链C1-C5烷基; Y表示CH2X或XCH2，其中X表示亚乙基，顺式或反式亚乙烯基或亚乙炔基。

2. 发明授权

US5149711A 2-cyclopentenone derivatives 失效
标题翻译： 2-环丙烯酮衍生物
公开(公告)号：US5149711A
公开(公告)日：1992-09-22
申请号：US319688
申请日：1989-03-07
申请人： Atsuo Hazato , Seizi Kurozumi
发明人： Atsuo Hazato , Seizi Kurozumi
IPC分类号： A61K31/22 , A61K31/12 , A61K31/557 , A61K31/695 , A61P35/00 , C07C45/00 , C07C45/67 , C07C49/743 , C07C49/747 , C07C49/753 , C07C67/00 , C07C69/21 , C07C405/00 , C07F7/18
CPC分类号： C07F7/1856 , C07C405/0025 , C07C45/673 , C07C49/743 , C07C49/747 , C07C49/753
摘要： A 2-cyclopentenone derivative represented by the following formula ##STR1## wherein R.sup.1 represents an alkyl group having 1 to 10 carbon atoms which may be substituted by a substituted or unsubstituted phenyl or phenoxy group, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical or different and each represents a hydrogen atom or a lower alkanoyl group, and the wavy line shows that the bonded state of the double bond is E or Z.This compound is useful for treating, for instance, malignant tumors.

3. 发明授权

US4990650A Aromatic derivative and preparation method thereof 失效
标题翻译：芳香族衍生物及其制备方法
公开(公告)号：US4990650A
公开(公告)日：1991-02-05
申请号：US529769
申请日：1990-05-29
申请人： Atsuo Hazato , Seizi Kurozumi
发明人： Atsuo Hazato , Seizi Kurozumi
IPC分类号： C07C33/38 , C07C69/616 , C07C69/618 , C07C233/12 , C07D333/16 , C07D333/24
CPC分类号： C07D333/24 , C07C321/00 , C07C323/00 , C07C33/38
摘要： 1. An aromatic derivative having the formula (I) or the salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom, hydroxyl, a halogen atom, or OR.sup.3 wherein R.sup.3 is C.sub.1 -C.sub.10 alkyl; A-B represents a hydrocarbon moiety having 1 to 10 carbon atoms and containing at least one double bond or a sulfur- or oxygen-containing hydrocarbon moiety having 1 to 10 carbon atoms; n is an integer of 2 to 4; X represents a group ##STR2## and Y represents a hydrogen atom; alkyl having 1 to 5 carbon atoms which may be substituted with aryl; alkenyl having 2 to 5 carbon atoms which may be substituted with aryl or aryl substituted with at least one C.sub.1 -C.sub.5 alkoxy; aryl which may be substituted with at least one carboxy or C.sub.1 -C.sub.5 alkoxycarbonyl or C.sub.1 -C.sub.5 alkoxy; provided that, when R.sup.1 and R.sup.2 are both hydrogen, the moiety --A--B--(CH.sub.2).sub.n --X--Y does not represent ##STR3## wherein n=2 to 4 and R.sup.4 is hydrogen or C.sub.1 -C.sub.5 alkyl.

4. 发明授权

US4797506A 6-substituted prostaglandins E.sub.1 and process for producing same 失效
标题翻译： 6-取代的前列腺素E1及其制备方法
公开(公告)号：US4797506A
公开(公告)日：1989-01-10
申请号：US794857
申请日：1985-10-18
申请人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi
发明人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi
IPC分类号： C07F7/18 , A61K31/557 , A61K31/5575 , A61P43/00 , C07C67/00 , C07C401/00 , C07C405/00 , C07F1/02 , C07F1/08
CPC分类号： C07C405/0041 , C07C405/00 , C07F1/02 , C07F1/08
摘要： 6-substituted prostaglandins E.sub.1 which are compounds represented by the following formula [I] or their enantiomers or mixtures whereof in any ratio: ##STR1## wherein R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.16 alkyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted phenyl C.sub.3 -C.sub.10 cycloalkyl group, a substituted or unsubstituted phenyl (C.sub.1 -C.sub.2) alkyl group, or one equivalent cation; R.sup.2 and R.sup.3, which may be the same or different, represent a hydrogen atom, a tri (C.sub.1 -C.sub.7) hydrocarbon silyl group, or a group forming an acetal linkage together with an oxygen atom of a hydroxyl group; R.sup.4 represents a hydrogen atom, a methyl group or a vinyl group; R.sup.5 represents a linear or branched C.sub.3 -C.sub.8 alkyl group, a linear or branched C.sub.3 -C.sub.8 alkenyl group, a linear or branched C.sub.3 -C.sub.8 alkynyl group, a phenyl group which may be substituted, a phenoxy group which may be substituted, a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted, or a linear or branched C.sub.1 -C.sub.5 alkyl group which may be substituted with a C.sub.1 -C.sub.6 alkoxy group, a phenyl group which may be substituted, a phenoxy group which may be substituted, or a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted; and X represents an ##STR2## group or an oxygen atom. Such 6-substituted prostaglandins E.sub.1 are useful for the treatment and/or prevention of digestive organ diseases such as duodenal ulcers or gastric ulcers.
摘要翻译： PCT No.PCT / JP85 / 00096 Sec。 371日期：1985年10月18日 102（e）1985年10月18日日期PCT提交1985年2月28日PCT公布。第WO85 / 03935号公报日期：1985年9月12日.6-取代的前列腺素E1，其为下式[I]表示的化合物或其对映异构体或其任何比例的混合物：其中R1表示氢原子，C1-C16烷基取代或未取代的苯基，取代或未取代的苯基C3-C10环烷基，取代或未取代的苯基（C1-C2）烷基或一个当量的阳离子; R2和R3可以相同或不同，表示氢原子，三（C1-C7）烃甲硅烷基或与羟基的氧原子一起形成缩醛键的基团; R4表示氢原子，甲基或乙烯基; R 5表示直链或支链C 3 -C 8烷基，直链或支链C 3 -C 8烯基，直链或支链C 3 -C 8炔基，可被取代的苯基，可被取代的苯氧基，C3 可被取代的C 10环烷基，或可以被C 1 -C 6烷氧基取代的直链或支链C 1 -C 5烷基，可被取代的苯基，可被取代的苯氧基或C3 可被取代的-C 10环烷基; X表示基团或氧原子。这种6-取代的前列腺素E1可用于治疗和/或预防消化器官疾病如十二指肠溃疡或胃溃疡。

5. 发明授权

US5159102A 7-thiaprostaglandins E, and process for producing same 失效
标题翻译： 7-硫代前列腺素E及其制备方法
公开(公告)号：US5159102A
公开(公告)日：1992-10-27
申请号：US526682
申请日：1990-05-22
申请人： Toshio Tanaka , Kiyoshi Bannai , Atsuo Hazato , Seizi Kurozumi
发明人： Toshio Tanaka , Kiyoshi Bannai , Atsuo Hazato , Seizi Kurozumi
IPC分类号： C07C405/00
CPC分类号： C07C405/0033
摘要： 7-thiaprostaglandins E.sub.1 which are compounds represented by the following formula [I] or their enantiomers or mixtures thereof in any ratio: ##STR1## where R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group, a C.sub.2 -C.sub.20 alkenyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted C.sub.3 -C.sub.10 cycloalkyl group, a substituted or unsubstituted phenyl (C.sub.1 -C.sub.2) alkyl group, or one equivalent cation; R.sup.2 and R.sup.3, which may be the same or different, represent a hydrogen atom, a tri (C.sub.1 -C.sub.7) hydrocarbon silyl group, or a group forming an acetal linkage together with an oxygen atom of a hydroxyl group; R.sup.4 represents a hydrogen atom, a methyl group or a vinyl group; R.sup.5 represents a linear or branched C.sub.3 -C.sub.8 alkyl group, a linear or branched C.sub.3 -C.sub.8 alkenyl group, a linear or branched C.sub.2 -C.sub.8 alkynyl group, a phenyl group which may be substituted, a phenoxy group which may be substituted, a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted, or a linear or branched C.sub.1 -C.sub.5 alkyl group which may be substituted with a C.sub.1 -C.sub.6 alkoxy group, a phenyl group which may be substituted, a phenoxy group which may be substituted or a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted; X represents an ethylene group, a vinylene group or an ethylene group; n represents 0 or 1; the expression represents an ethylene group or a vinylene group, provided that when n is o and x is an ethylene group, R.sup.5 is not a linear or branched C.sub.3 -C.sub.8 alkyl group or a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted.Such compounds are especially useful for the treatment and prevention of digestive organ diseases such as a duodenal ulcer or a gastric ulcer.
摘要翻译：作为由下式[I]表示的化合物或其对映异构体或其混合物的7-硫代前列腺素E1为任意比例：其中R 1表示氢原子，C 1 -C 10烷基，C 2 -C 20链烯基取代或未取代的苯基，取代或未取代的C3-C10环烷基，取代或未取代的苯基（C1-C2）烷基或一个当量的阳离子; R2和R3可以相同或不同，表示氢原子，三（C1-C7）烃甲硅烷基或与羟基的氧原子一起形成缩醛键的基团; R4表示氢原子，甲基或乙烯基; R 5表示直链或支链C 3 -C 8烷基，直链或支链C 3 -C 8烯基，直链或支链C 2 -C 8炔基，可被取代的苯基，可被取代的苯氧基，C3 可以被取代的C 10环烷基，或可以被C 1 -C 6烷氧基取代的直链或支链C 1 -C 5烷基，可被取代的苯基，可被取代的苯氧基或C 3 -C 6烷氧基，可被取代的C 10环烷基; X表示亚乙基，亚乙烯基或亚乙基; n表示0或1; 该表达式表示亚乙基或亚乙烯基，条件是当n是o且x是亚乙基时，R 5不是直链或支链C 3 -C 8烷基或可被取代的C 3 -C 10环烷基。这些化合物特别可用于治疗和预防消化器官疾病如十二指肠溃疡或胃溃疡。

6. 发明授权

US5116869A 2-substituted-2-cyclopentenones 失效
标题翻译： 2-取代的2-环丙基
公开(公告)号：US5116869A
公开(公告)日：1992-05-26
申请号：US759785
申请日：1991-09-03
申请人： Satoshi Sugiura , Atsuo Hazato , Toru Minoshima , Yoshinori Kato , Yasuko Koshihara , Seizi Kurozumi
发明人： Satoshi Sugiura , Atsuo Hazato , Toru Minoshima , Yoshinori Kato , Yasuko Koshihara , Seizi Kurozumi
IPC分类号： C07C317/24 , C07C323/22 , C07C405/00 , C07D303/32 , C07D303/40
CPC分类号： C07C317/24 , C07C323/22 , C07C405/00 , C07C405/0033 , C07D303/32 , C07D303/40 , C07C2101/10
摘要： 2-Substituted-2-cyclopentenones represented by the formula (I): ##STR1## wherein A is a hydroxyl group or ##STR2## and B is a hydrogen atom or A and B are bonded together to form one bonding arm;R.sup.1 represents a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms;R.sup.2 represents a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 10 carbon atoms;R.sup.3 represents a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 10 carbon atoms; wherein,when R.sup.3 is a single bond bonded to the cyclopentene skeleton, X represents a hydrogen atom, a hydroxyl group or a protected hydroxyl group; andwhen R.sup.3 is a double bond bonded to the pentene skeleton, X represents a bonding arm constituting a part of said double bond; andm and n independently represent 0, 1 or 2.

7. 发明授权

US5175338A Isocarbacyclin derivatives and their pharmaceutically acceptable salts thereof 失效
标题翻译：异卡环林衍生物及其药学上可接受的盐
公开(公告)号：US5175338A
公开(公告)日：1992-12-29
申请号：US584493
申请日：1990-09-14
申请人： Atsuo Hazato , Toshio Tanaka , Noriaki Okamura , Kiyoshi Bannai , Seizi Kurozumi , Masaaki Suzuki , Ryoji Noyori
发明人： Atsuo Hazato , Toshio Tanaka , Noriaki Okamura , Kiyoshi Bannai , Seizi Kurozumi , Masaaki Suzuki , Ryoji Noyori
IPC分类号： C07C405/00
CPC分类号： C07C405/0083 , C07C405/0025
摘要： An isocarbacyclin derivative represented by the following formula [VII'] ##STR1## wherein A represents, a hydrocarbylcarboxylate group, a carboxymethoxycarbonyl group, an amide group, an acyloxymethyl group or a hydroxymethyl group; R.sup.4 represents H, a methyl group or a vinyl group; R.sup.5 represents a (substituted)alkyl group, a phenyl group, a phenoxy group or a cycloalkyl group; R.sup.e22 and R.sup.e32 represent H or a hydroxyprotecting group; n is 0 or 1;and a pharmaceutically acceptable salt thereof.
摘要翻译：其中A表示烃基羧酸酯基，羧甲氧基羰基，酰胺基，酰氧基甲基或羟甲基，由下式[Ⅶ']表示的异卡巴环素衍生物。 R4表示H，甲基或乙烯基; R5表示（取代）烷基，苯基，苯氧基或环烷基; Re22和Re32代表H或羟基保护基团; n为0或1; 及其药学上可接受的盐。

8. 发明授权

US4649156A 6-nitroprostaglandin derivatives 失效
标题翻译： 6-硝基前列腺素衍生物
公开(公告)号：US4649156A
公开(公告)日：1987-03-10
申请号：US756574
申请日：1985-07-19
申请人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi
发明人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi
IPC分类号： C07C405/00 , A61K31/215 , A61K31/25 , C07C69/74
CPC分类号： C07C405/00 , C07C405/0041
摘要： The present invention provides a novel 6-nitroprostaglandin derivatives of the formula (I) ##STR1## wherein A, n, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in claim 1.The 6-nitroprostaglandin derivatives is useful as medicines because of its excellent pharmacological activities including platelet aggregation inhibiting activity, blood pressure lowering activity and anti-ulcerous activity, and useful as intermediate for other pharmaceutically active compounds such as 6-oxoprostaglandin derivatives, prostaglandin E.sub.1 derivatives, etc.
摘要翻译：本发明提供了式（I）的新型6-硝基前列腺素衍生物，其中A，n，R 1，R 2，R 3，R 4和R 5如权利要求1中所定义。6-硝基前列腺素衍生物是有用的作为药物，因为其优异的药理活性包括血小板聚集抑制活性，降血压活性和抗溃疡活性，并且可用作其它药物活性化合物如6-氧前列腺素衍生物，前列腺素E1衍生物等的中间体。

9. 发明授权

US4466980A Thiaprostaglandin E.sub.1 derivatives, process for production thereof, and pharmaceutical use thereof 失效
标题翻译： Thiaprostaglandin E1衍生物，其制备方法及其药物用途
公开(公告)号：US4466980A
公开(公告)日：1984-08-21
申请号：US316902
申请日：1981-10-30
申请人： Toshio Tanaka , Takeshi Toru , Takeo Oba , Noriaki Okamura , Kenzo Watanabe , Kiyoshi Bannai , Atsuo Hazato , Seizi Kurozumi , Fukuyoshi Kamimoto , Akira Ohtsu
发明人： Toshio Tanaka , Takeshi Toru , Takeo Oba , Noriaki Okamura , Kenzo Watanabe , Kiyoshi Bannai , Atsuo Hazato , Seizi Kurozumi , Fukuyoshi Kamimoto , Akira Ohtsu
IPC分类号： C07C405/00 , C07D309/12 , C07C177/00 , A61K31/557
CPC分类号： C07C405/0033 , C07D309/12
摘要： A novel compound selected from the group consisting of 7-(or 6- or 4-)thiaprostaglandin E.sub.1 derivatives of the formula (I). ##STR1## wherein A represents --CH.sub.2 -- or ##STR2## in which n is 0, 1 or 2, provided that only one A cut of three is ##STR3## R.sup.1 -R.sup.7 and G are as defined in the specification, the 15-epimers of said thiaprostaglandin E.sub.1 derivatives, the enatiomers of said thiaprostaglandin E.sub.1 derivatives or their 15-epimers, and mixtures of these compounds.A 7-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by reacting a 2-organo-2-cyclopentenone (II) with an organic copper-lithium compound (III) to effect conjugation reaction. A 6-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by subjecting an .alpha.,.beta.-unsaturated ketone (IV) and a thiol (V) to the Michael addition reaction. And, 4-thiaprostaglandin derivative and/or its optical isomer may also be prepared by the Michael addition reaction from a 2-allyl substituted cyclopentanone (VI) and a thiol (VIII).Some compounds ((I)-1) amongst the compounds of the formula (I) and/or their optical isomer are useful for controlling vascular actions such as angina pectoris, vasodilation etc.
摘要翻译：选自式（I）的7-（或6-或4-）赖氨酸前列腺素E1衍生物的新化合物。（I）其中A表示-CH 2 - 或，其中n为0,1或2，条件是三个只有一个A切割是R 1 -R 7，G如说明书中所定义，所述thiaprostaglandin E1衍生物的15-差向异构体，所述thiaprostaglandin E1衍生物或它们的15-差向异构体的对映体，以及这些化合物的混合物。 7-硫代前列腺素E1衍生物和/或其旋光异构体可以通过2-有机-2-环戊烯酮（II）与有机铜 - 锂化合物（III）反应来制备共轭反应。 6-硫代前列腺素E1衍生物和/或其旋光异构体可以通过使α，β-不饱和酮（IV）和硫醇（V）进行迈克尔加成反应来制备。并且，也可以通过从2-烯丙基取代的环戊酮（VI）和硫醇（VIII）的迈克尔加成反应制备4-硫代前列腺素衍生物和/或其旋光异构体。式（I）化合物和/或其旋光异构体中的一些化合物（（I）-1）可用于控制血管作用，例如心绞痛，血管舒张等。

10. 发明授权

US4921995A Process for producing 16-substituted prostaglandines 失效
标题翻译：生产16-取代的前列腺素的方法
公开(公告)号：US4921995A
公开(公告)日：1990-05-01
申请号：US153881
申请日：1988-02-09
申请人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi , Masahiro Koga
发明人： Toshio Tanaka , Atsuo Hazato , Seizi Kurozumi , Masahiro Koga
IPC分类号： C07C405/00
CPC分类号： C07C405/0033 , C07C405/00
摘要： A novel process for manufacturing 16-substituted .DELTA..sup.7 -prostaglandin Es, which include compounds expressed by the following formula (I), their enanantiomers, or their mixtures of arbitrary mixing ratio, ##STR1## wherein R.sup.1 indicates COOR.sup.2, CH.sub.2 OR.sup.3, or COCH.sub.2 OR.sup.3, in which R.sup.2 indicates a hydrogen atom, a substituted or unsubstituted C.sub.1 -C.sub.10 alkyl group, a substituted or unsubstituted C.sub.3 -C.sub.10 cycloalkyl group, or a substituted or unsubstituted phenyl group, and R.sup.3 indicates a hydrogen atom, a tri(C.sub.1 -C.sub.7) hydrocarbon silyl group, a group which forms an acetal bond together with the oxygen atom of a hydroxyl group, or a C.sub.2 -C.sub.7 acyl group; R.sup.4 and R.sup.5 are identical or different, each representing a hydrogen atom, a tri(C.sub.1 -C.sub.7) hydrocarbon silyl group, or a group which forms an acetal bond together with the oxygen atom of a hydroxyl group; R.sup.6 indicates a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, or a vinyl group; R.sup.7 indicates a linear or branched C.sub.3 -C.sub.8 alkyl group, an alkyenyl group, or an alkynyl group, which may contain an oxygen atom; a phenyl group, a phenoxy group, or a C.sub.3 - C.sub.10 cycloalkyl group, which may be substituted; or a linear or branched C.sub.1 -C.sub.5 alkyl group which is substituted by a C.sub.1 -C.sub.6 alkoxy group, a phenyl group, a phenoxy group, or a C.sub.3 -C.sub.10 cycloalkyl group, which may be substituted; and Y indicates CH.sub.2 X or XCH.sub.2, in which X represents an ethylene group, a cis -or trans-vinylene group, or an ethynylene group.

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