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    • 52. 发明授权
    • Process for preparing phosphonyloxyacyl amino acids
    • 膦酰氧基酰基氨基酸的制备方法
    • US4900860A
    • 1990-02-13
    • US358240
    • 1989-05-30
    • John K. Thottathil
    • John K. Thottathil
    • C07F9/40C07F9/572C07F9/576C07F9/6561C07F9/6571
    • C07F9/657181C07F9/4075C07F9/5728C07F9/5765C07F9/6561
    • A process is provided for preparing phosphonyloxyacylamino acids and derivatives thereof having the structure ##STR1## wherein X is ##STR2## which includes the steps of treating a phosphonic acid dichloride of the structure ##STR3## with an .alpha.-hydroxy acid of the structure ##STR4## in the presence of base such as triethylamine at reduced temperatures to form the cyclic mixed anhydride of the structure ##STR5## (which is a new intermediate) and reacting the cyclic mixed anhydride with an amino acid or ester of the structureHX in the presence of base such as triethylamine produces the ACE inhibitor compound ##STR6## In an alternative process, the cyclic anhydride is quenched with water to form the diacid ##STR7## which is treated with a condensing agent such as dicyclohexyl carbodiimide (DCC), 1,1-carbonyldiimidazole (CDI) or thionyl chloride followed by quenching with the amino acidHXproduces the above ACE inhibitor compound.In another variation of the process of the invention, the above cyclic anhydride is treated with an alcohol of the structureR.sub.3 OHto form the phosphonic acid diester ##STR8## which may be coupled with the amino acid or esterHXto form the ACE inhibitor ##STR9##
    • 提供了一种制备具有结构的膦酰氧基酰氨基酸及其衍生物的方法,其中X是图像+ TR图像,其包括以下步骤:将α结构的膦酸二氯化物用α - 羟基酸在碱例如三乙胺存在下,在降低的温度下反应,形成结构“IMAGE”(其是新的中间体)的环状混合酸酐,并使环状混合酐与氨基酸或 在碱例如三乙胺存在下,结构HX的酯产生ACE抑制剂化合物在替代方法中,环状酸酐用水淬灭以形成二酸,其用缩合剂如二环己基 碳二亚胺(DCC),1,1-羰基二咪唑(CDI)或亚硫酰氯,然后用氨基酸HX淬灭产生上述ACE抑制剂化合物。 在本发明方法的另一个变化方案中,将上述环状酸酐用结构为R 3 OH的醇处理以形成可与氨基酸或酯HX偶联以形成ACE抑制剂的图像的膦酸二酯 >
    • 53. 发明授权
    • Method for preparing phosphinic acids used in preparing ace inhibitors
and intermediates produced thereby
    • 制备用于制备ace抑制剂的次膦酸的方法及其制备的中间体
    • US4873356A
    • 1989-10-10
    • US102694
    • 1987-09-30
    • Edward W. Petrillo, Jr.Donald S. KaranewskyJohn K. ThottathilJames E. HeikesJohn A. Grosso
    • Edward W. Petrillo, Jr.Donald S. KaranewskyJohn K. ThottathilJames E. HeikesJohn A. Grosso
    • A61K31/66A61P9/12A61P43/00B01J23/44C07B61/00C07F9/32C12N9/99
    • C07F9/3264C07F9/3211
    • A method is provided for preparing phosphinic acid compounds, which are useful in preparing certain angiotensin converting enzyme inhibitors, which have the formula ##STR1## wherein R.sub.1 is lower alkyl, aryl, arylalkyl, cycloalkyl or cycloalkylalkyl;R.sub.2 is hydrogen, lower alkyl or arylalkyl;X is hydrogen, lower alkyl or phenyl;Y is hydrogen, lower alkyl, phenyl or alkoxy, or together X and Y are --(CH.sub.2).sub.2 --, --(CH.sub.2).sub.3 --, --CH.dbd.CH--, or ##STR2## and n is 0 or 1including salts thereof and stereoisomers thereof, which method includes the steps of reacting a phosphinic acid ester of the structure ##STR3## wherein R.sub.3 is a group removable by hydrogenolysis such as benzyl or substituted benzyl, with a halo ester of the structure ##STR4## in the presence of an organic base to form a phosphinic acid ester of the structure ##STR5## hydrogenating the above ester to form a diastereomic mixture of a phosphinic acid of the structure ##STR6## recrystallizing to recover the preferred racemic mixture and resolving same employing a resolving agent, preferably L-cinchonidine, to form the corresponding resolved salt which may be acidified to the corresponding acid. In addition, novel intermediates which are acids and salts as described above are also provided.
    • 提供了一种制备次膦酸化合物的方法,其可用于制备具有下式的其中R 1为低级烷基,芳基,芳烷基,环烷基或环烷基烷基的一些血管紧张素转换酶抑制剂; R2是氢,低级烷基或芳基烷基; X是氢,低级烷基或苯基; Y是氢,低级烷基,苯基或烷氧基,或者一起X和Y是 - (CH 2)2 - , - (CH 2)3 - , - CH = CH-或,n是0或1,包括其盐 该方法包括以下步骤:使结构式“其中R3是通过氢解可除去的基团如苄基或取代的苄基”的结构式的次膦酸酯与结构“IMAGE”的卤代酯在存在下 形成下述结构的次膦酸酯的有机碱,氢化上述酯以形成结构为重结晶的次膦酸的非对映体混合物,以回收优选的外消旋混合物,并使用拆分剂拆分,优选 形成相应的分解盐,其可以酸化成相应的酸。 此外,还提供了如上所述的酸和盐的新型中间体。