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公开(公告)号:US6093812A
公开(公告)日:2000-07-25
申请号:US179008
申请日:1994-01-07
申请人: Tiruvettipuram K. Thiruvengadam , Chou-Hong Tann , Junning Lee , Timothy McAllister , Cesar Colon , Derek H. R. Barton , Ronald Breslow , Anantha Sudhakar
发明人: Tiruvettipuram K. Thiruvengadam , Chou-Hong Tann , Junning Lee , Timothy McAllister , Cesar Colon , Derek H. R. Barton , Ronald Breslow , Anantha Sudhakar
IPC分类号: A61K31/395 , A61K31/397 , A61K31/40 , A61K31/415 , A61K31/44 , A61K31/4427 , A61K31/443 , A61K31/4433 , A61K31/47 , A61K31/495 , A61K31/535 , A61K31/695 , A61P3/06 , A61P9/10 , C07D205/08 , C07D205/085 , C07D401/04 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07D413/10 , C07F7/08 , C07F7/10 , C07F7/18
CPC分类号: C07D401/04 , C07D205/08 , C07D205/085 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07F7/0812 , C07F7/186 , C07F7/1892
摘要: This invention provides an improved process for producing azetidinones. More particularly, this invention provides the steps of producing an trans-azetidinone represented by the formula ##STR1## from a carboxylic acid R.sup.2 --D--CH.sub.2 COOH, an aldehyde R.sup.1 --A--CHO and an amine RNH.sub.2, by the steps of: (a1) converting a carboxylic acid to the corresponding acid chloride; (b1) deprotonating a chiral oxazolidinone and treating the resulting anion with the product of step (a1); (c1) enolizing the product of step (b1) and condensing with the aldehyde; (d1) hydrolyzing the product of step (c1); (e1) condensing the product of step (d1) with the amine; and (f1) cyclizing the product of step (e1). Alternatively, the process comprises (a2) enolizing the product of step (b1) and condensing, in the presence of a Lewis acid, with a Schiff's base prepared from the aldehyde and the amine; and (b2) cyclizing the product of step (a2).
摘要翻译: 本发明提供了一种生产氮杂环丁酮的改进方法。 更具体地,本发明提供了以下步骤:通过以下步骤,由羧酸R2-D-CH2COOH,醛R1-A-CHO和胺RNH2制备由式表示的反式氮杂环丁酮的步骤:(a1) 羧酸与相应的酰氯反应; (b1)将手性恶唑烷酮去质子化并用步骤(a1)的产物处理所得的阴离子; (c1)使步骤(b1)的产物烯化并与醛缩合; (d1)水解步骤(c1)的产物; (e1)将步骤(d1)的产物与胺缩合; 和(f1)使步骤(e1)的产物环化。 或者,该方法包括(a2)使路易斯酸存在下的步骤(b1)的产物烯醇化并与由醛和胺制备的席夫碱缩合; 和(b2)使步骤(a2)的产物环化。
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公开(公告)号:US5306817A
公开(公告)日:1994-04-26
申请号:US962768
申请日:1992-10-19
申请人: Tiruvettipuram K. Thiruvengadam , Chou-Hong Tann , Junning Lee , Timothy McAllister , Anantha Sudhakar
发明人: Tiruvettipuram K. Thiruvengadam , Chou-Hong Tann , Junning Lee , Timothy McAllister , Anantha Sudhakar
IPC分类号: A61K31/395 , A61K31/397 , A61K31/40 , A61K31/415 , A61K31/44 , A61K31/4427 , A61K31/443 , A61K31/4433 , A61K31/47 , A61K31/495 , A61K31/535 , A61K31/695 , A61P3/06 , A61P9/10 , C07D205/08 , C07D205/085 , C07D401/04 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07D413/10 , C07F7/08 , C07F7/10 , C07F7/18 , C07B53/00
CPC分类号: C07D401/04 , C07D205/08 , C07D205/085 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07F7/0812 , C07F7/186 , C07F7/1892
摘要: This invention provides an improved process for producing azetidinones. More particularly, this invention provides the steps of producing an trans-azetidinone represented by the formula ##STR1## from a carboxylic acid R.sup.2 -D-CH.sub.2 -COOH, an aldehyde R.sup.1 -A-CHO and an amine RNH.sub.2, by the steps of: (a1) converting a carboxylic acid to the corresponding acid chloride; (b1) deprotonating a chiral oxazolidinone and treating the resulting anion with the product of step (a1); (c1) enolizing the product of step (b1) and condensing with the aldehyde; (d1) hydrolyzing the product of step (c1); (e1) condensing the product of step (d1) with the amine; and (f1) cyclizing the product of step (e1).Alternatively, the process comprises (a2) enolizing the product of step (b1) and condensing, in the presence of a Lewis acid, with a Schiff's base prepared from the aldehyde and the amine; and (b2) cyclizing the product of step (a2).
摘要翻译: 本发明提供了一种生产氮杂环丁酮的改进方法。 更具体地,本发明提供了由羧酸R2-D-CH2-COOH,醛R1-A-CHO和胺RNH2由式(*化学结构*)I表示的反式氮杂环丁酮的步骤,通过 步骤:(a1)将羧酸转化为相应的酰氯; (b1)将手性恶唑烷酮去质子化并用步骤(a1)的产物处理所得的阴离子; (c1)使步骤(b1)的产物烯化并与醛缩合; (d1)水解步骤(c1)的产物; (e1)将步骤(d1)的产物与胺缩合; 和(f1)使步骤(e1)的产物环化。 或者,该方法包括(a2)使路易斯酸存在下的步骤(b1)的产物烯醇化并与由醛和胺制备的席夫碱缩合; 和(b2)使步骤(a2)的产物环化。
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公开(公告)号:US5502222A
公开(公告)日:1996-03-26
申请号:US252302
申请日:1994-06-01
IPC分类号: C07J20060101 , C07J5/00 , C07J7/00 , C07J51/00 , C07J75/00
CPC分类号: C07J7/0085 , C07J5/0076 , C07J51/00
摘要: Described is a process for the regioselective dehydration of 11-hydroxy steroids using PCl.sub.5, PCl.sub.3, POCl.sub.3 or either SO.sub. Cl.sub.2 and imidazole, or PPh.sub.3 and CCl.sub.4. The disclosed process selectively forms .increment..sup.9,11 steroids from either 11-.alpha.- or 11-.beta.-hydroxy steroids, and can also be used for the one-step conversion of 11,21-dihydroxy steroids to 21-chloro-.increment..sup.9,11 steroids.
摘要翻译: 描述了使用PCl5,PCl3,POCl3或SOCl2和咪唑或PPh3和CCl4区域选择性脱水11-羟基类固醇的方法。 所公开的方法选择性地形成来自11-α或11-β-羟基类固醇的INCREMENT 9,11类固醇,并且还可以用于11,21-二羟基类固醇的一步转化为21-氯-INCREMENT 9, 11种类固醇。
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公开(公告)号:US5750745A
公开(公告)日:1998-05-12
申请号:US737690
申请日:1996-11-18
IPC分类号: C07J20060101 , C07J5/00 , C07J7/00 , C07J51/00 , C07J75/00
CPC分类号: C07J7/0085 , C07J5/0076 , C07J51/00
摘要: Described is a process for the regioselective dehydration of 11-hydroxy steroids using PCl.sub.5, PCl.sub.3, POCl.sub.3 or either SO.sub.2 Cl.sub.2 and imidazole, or PPh.sub.3 and CCl.sub.4. The disclosed process selectively forms .DELTA..sup.9,11 steroids from either 11-.alpha.- or 11-.beta.-hydroxy steroids, and can also be used for the one-step conversion of 11,21 -dihydroxy steroids to 21-chloro-.DELTA..sup.9,11 steroids. Also disclosed are processes for the regioselective conversion of 11-.beta.-chloro steroids to .DELTA..sup.9,11 steroids, and for regioselectively converting an 11,17,21-trihydroxy streoid to a 21-chloro-11,17-dihydroxy steroid.
摘要翻译: PCT No.PCT / US95 / 06600 Sec。 371日期:1996年11月18日 102(e)1996年11月18日日期PCT提交1995年5月30日PCT公布。 第WO95 / 32989号公报 日期1995年12月7日描述了使用PCl5,PCl3,POCl3或SO2Cl2和咪唑或PPh3和CCl4区域选择性脱水11-羟基类固醇的方法。 所公开的方法选择性地从11-α-或11-β-羟基类固醇形成DELTA 9,11类固醇,并且也可用于11,21-二羟基类固醇到21-氯-DTA 9,11的一步转化 类固醇。 还公开了将11-β-氯类固醇区域选择性转化为DELTA 9,11类固醇的方法,并将11,17,21-三羟基链霉亲和力区域选择性地转化为21-氯-11,17-二羟基类固醇。
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公开(公告)号:US5442047A
公开(公告)日:1995-08-15
申请号:US138558
申请日:1993-10-15
申请人: Chou-Hong Tann , Tiruvettipuram K. Thiruvengadam , John S. Chiu , Cesar Colon , Michael D. Green
发明人: Chou-Hong Tann , Tiruvettipuram K. Thiruvengadam , John S. Chiu , Cesar Colon , Michael D. Green
IPC分类号: C07D277/64 , C07D277/74 , C07H15/236 , C07H15/26 , C07H1/00
CPC分类号: C07D277/74 , C07D277/64 , C07H15/236 , C07H15/26
摘要: An improved process for converting gentamicin B to isepamicin comprising forming 3,6'-di-N-formylgentamicin B, acylating the 1-amino group with an N-protected (S)-isoserine compound and removing all the blocking groups under conditions which result in high yields of isepamicin. A novel formylating agent, 2-formylmercaptobenzothiazole, and intermediate compounds are also disclosed.
摘要翻译: 一种将庆大霉素B转化为异环磷酰胺的改进方法,包括形成3,6'-二-N-甲酰基阿霉素B,用N-保护的(S) - 异丝氨酸化合物酰化1-氨基,并在产生的条件下除去所有的封闭基团 在高产量的异环霉素。 还公开了一种新型甲酰化剂,2-甲酰巯基苯并噻唑和中间体化合物。
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6.
公开(公告)号:US5616742A
公开(公告)日:1997-04-01
申请号:US446982
申请日:1995-05-22
IPC分类号: C07J20060101 , C07J5/00 , C07J7/00 , C07J51/00 , C07J75/00
CPC分类号: C07J7/0085 , C07J5/0076 , C07J51/00
摘要: Described is a process for the regioselective dehydration of 11-hydroxy steroids using PCl.sub.5, PCl.sub.3, POCl.sub.3 or either SO.sub.2 Cl.sub.2 and imidazole, or PPh.sub.3 and CCl.sub.4. The disclosed process selectively forms .DELTA..sup.9,11 steroids from either 11-.alpha.- or 11-.beta.-hydroxy steroids, and can also be used for the one-step conversion of 11,21-dihydroxy steroids to 21-chloro-.DELTA..sup.9,11 steroids.Also disclosed are processes for the regioselective conversion of 11-.beta.-chloro steroids to .DELTA..sup.9,11 steroids, and for regioselectively converting an 11,17,21-trihydroxy streoid to a 21-chloro-11,17-dihydroxy steroid.
摘要翻译: 描述了使用PCl5,PCl3,POCl3或SO2Cl2和咪唑或PPh3和CCl4区域选择性脱水11-羟基类固醇的方法。 所公开的方法选择性地从11-α或11-β-羟基类固醇形成DELTA 9,11类固醇,并且还可用于11,21-二羟基类固醇一步转化为21-氯-DTA 9, 11种类固醇。 还公开了将11-β-氯类固醇区域选择性转化为DELTA 9,11类固醇的方法,并将11,17,21-三羟基链霉亲和力区域选择性地转化为21-氯-11,17-二羟基类固醇。
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公开(公告)号:US5539121A
公开(公告)日:1996-07-23
申请号:US442084
申请日:1995-05-16
申请人: Chou-Hong Tann , Tiruvettipuram K. Thiruvengadam , John S. Chiu , Cesar Colon , Michael D. Green
发明人: Chou-Hong Tann , Tiruvettipuram K. Thiruvengadam , John S. Chiu , Cesar Colon , Michael D. Green
IPC分类号: C07D277/64 , C07D277/74 , C07H15/236 , C07H15/26 , C07D417/00
CPC分类号: C07D277/74 , C07D277/64 , C07H15/236 , C07H15/26
摘要: There is disclosed a novel formylating agent, 2-formylmercaptobenzothiazole.
摘要翻译: 公开了一种新的甲酰化剂2-甲酰巯基苯并噻唑。
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公开(公告)号:US5561227A
公开(公告)日:1996-10-01
申请号:US265466
申请日:1994-06-23
IPC分类号: C07D205/08 , C07D205/085 , C07D401/04 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07F7/08 , C07F7/18 , C07D205/09 , C07B43/06
CPC分类号: C07D401/04 , C07D205/08 , C07D205/085 , C07D403/04 , C07D405/04 , C07D405/10 , C07D409/04 , C07F7/0812 , C07F7/186
摘要: This invention provides an improved process for producing azetidinones. More particularly, this invention provides the steps of producing an azetidinone represented by the formula I ##STR1## from a carboxylic acid R.sup.2 --D--CH.sub.2 COOH, an aldehyde R.sup.1 --A--CHO and an amine RNH.sub.2, by the steps of: (a) converting a carboxylic acid to the corresponding acid chloride; (b) deprotonating a chiral oxazolidinone and treating the resulting anion with the product of step (a); (c) enolizing the product of step (b) and condensing with an imine; and (d) cyclizing the product of step (c). Steps (c) and (d) of this process are as shown in the following reaction scheme. ##STR2##
摘要翻译: 本发明提供了一种生产氮杂环丁酮的改进方法。 更具体地说,本发明提供了通过以下步骤,由羧酸R2-D-CH2COOH,醛R1-A-CHO和胺RNH2制备由式I'I表示的氮杂环丁酮的步骤:(a )将羧酸转化为相应的酰氯; (b)将手性恶唑烷酮去质子化并用步骤(a)的产物处理所得阴离子; (c)使步骤(b)的产物烯化并与亚胺冷凝; 和(d)使步骤(c)的产物环化。 该方法的步骤(c)和(d)如下列反应方案所示。 步骤(c)
+ TR 步骤(d) -
公开(公告)号:US4831123A
公开(公告)日:1989-05-16
申请号:US927765
申请日:1986-11-06
IPC分类号: C07H15/236
CPC分类号: C07H15/236
摘要: A high yielding process for converting 3,2',6'-tri-N-acetyl sisomicin to netilmicin comprising the step of silylating the starting material at the 5,2' positions, and optionally at the 4' position, converting the 1-amino substituent to a 1-N-imino substituent, converting the imino to an ethylamino, deprotecting the compound and recovering netilmicin. Also disclosed are novel intermediate compounds.
摘要翻译: 将3,2',6'-三-N-乙酰西索米星转化为净丝氨酸的高产率方法包括在5,2'位置和任选在4'位置使起始物质甲硅烷基化的步骤, 氨基取代基转化为1-N-亚氨基取代基,将亚氨基转化为乙基氨基,使化合物脱保护并回收西他咪啶。 还公开了新型中间体化合物。
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公开(公告)号:US06207822B1
公开(公告)日:2001-03-27
申请号:US09455482
申请日:1999-12-05
申请人: Tiruvettipuram K. Thiruvengadam , Xiaoyong Fu , Chou-Hong Tann , Timothy L. McAllister , John S. Chiu , Cesar Colon
发明人: Tiruvettipuram K. Thiruvengadam , Xiaoyong Fu , Chou-Hong Tann , Timothy L. McAllister , John S. Chiu , Cesar Colon
IPC分类号: C07D20508
CPC分类号: C07D263/22 , C07D205/08 , Y02P20/55
摘要: This invention provides a process for preparing the hypocholesterolemic compound comprising: (a) reacting p-fluorobenzoylbutyric acid with pivaloyl chloride and acylating the product with a chiral auxiliary to obtain a ketone of formula IV: (b) reducing the ketone of formula IV in the presence of a chiral catalyst to an alcohol: (c) reacting the chiral alcohol of step (b), an imine and a silyl protecting agent, then condensing the protected compounds to obtain a &bgr;-(substituted-amino)amide of formula VII: (d) cyclizing the &bgr;-(substituted-amino)amide of formula VII with a silylating agent and a fluoride ion catalyst to obtain a protected lactam of the formula VIII: and removing the protecting groups. The intermediates of formulas VII and VIII are also claimed.
摘要翻译: 本发明提供了一种制备降血胆固醇化合物的方法,其包括:(a)使对氟苯甲酰基丁酸与新戊酰氯反应,并用手性助剂酰化产物,得到式IV的酮:(b)在存在下还原式IV的酮 的手性催化剂与醇反应:(c)使步骤(b)的手性醇与亚胺和甲硅烷基保护剂反应,然后使受保护的化合物缩合得到式VII的(取代的 - 氨基)酰胺: d)用甲硅烷基化剂和氟离子催化剂使式Ⅶ的(取代 - 氨基)酰胺环化,得到受保护的式Ⅷ的内酰胺,并除去保护基。式Ⅶ和Ⅷ的中间体也被称为 。
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