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    • 3. 发明授权
    • Process for the preparation of pyrimidine derivatives
    • 制备嘧啶衍生物的方法
    • US07312329B2
    • 2007-12-25
    • US11004755
    • 2004-12-03
    • Narendra JoshiShekhar Bhaskar BhirudBatchu ChandrasekharK. Eswara RaoSubhash Damle
    • Narendra JoshiShekhar Bhaskar BhirudBatchu ChandrasekharK. Eswara RaoSubhash Damle
    • C07F9/02C07D239/02
    • C07D239/42Y02P20/55
    • An improved process for the preparation of pyrimidine derivatives is provided comprising reacting a Wittig reagent of the general formula wherein R is an alkyl of from 1 to 10 carbon atoms, aryl or arylalkyl, R1 is a substituted or unsubstituted hydrocarbon group, R2 and R3 are the same or different and are hydrogen or a substituted or unsubstituted hydrocarbon group; Z is sulfur, oxygen, sulfonyl, or imino which may be substituted by formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, isovaleryl, amino substituted by sulfonyl or alkylsulfonyl, and sulfonyl substituted by alkyl, amino or alkylamino and X is a halogen; with an aldehyde of the general formula wherein R4 is hydrogen, a lower alkyl or a cation capable of forming a non-toxic pharmaceutically acceptable salt and each R5 are the same or different and are hydrogen or a hydrolyzable protecting group, or each R5, together with the oxygen atom to which each is bonded, form a hydrolyzable cyclic protecting group, or each R5 is bonded to the same substituent which is bonded to each oxygen atom to form a hydrolyzable protecting group; in the presence of a base.
    • 提供了制备嘧啶衍生物的改进方法,包括使通式为Wittig试剂反应其中R为1至10个碳原子的烷基,芳基或芳基烷基,R 1是被取代或 未取代的烃基,R 2和R 3相同或不同,为氢或取代或未取代的烃基; Z可以被甲酰基,乙酰基,丙酰基,丁酰基,异丁酰基,戊酰基,异戊酰基,被磺酰基或烷基磺酰基取代的氨基,和被烷基,氨基或烷基氨基取代的磺酰基取代的硫,氧,磺酰基或亚氨基,X是卤素 ; 与其中R 4为氢的通式的醛,能够形成无毒的药学上可接受的盐的低级烷基或阳离子和每个R 5相同 或不同的是氢或可水解保护基团,或每个R 5与每个键合的氧原子一起形成可水解的环保护基团,或每个R 5, SUP>键合到与每个氧原子键合的相同取代基以形成可水解保护基团; 在一个基地的存在。
    • 6. 发明授权
    • Process for the preparation of carboxamide compounds
    • 制备羧酰胺化合物的方法
    • US07459553B2
    • 2008-12-02
    • US11077723
    • 2005-03-11
    • Bobba Venkata SivakumarShekhar Bhaskar BhirudChandrasekhar BatchuSanjay Anantha Kale
    • Bobba Venkata SivakumarShekhar Bhaskar BhirudChandrasekhar BatchuSanjay Anantha Kale
    • C07D223/18
    • C07D223/28C07D223/26
    • A process for preparing 5H-dibenz[b,f]azepine-5-carboxamide of the general formula: wherein R1, R2, R3 and R4 are the same or different and can be hydrogen, halogen, nitro, cyano, carboxyl, R, —CO(R), —OCO(R), —O(R), —N(R)2, —CON(R)2, and —COO(R), wherein R is selected from the group consisting of C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkenyl, C5-C10 cycloalkenyl, C2-C10 alkynyl, and C6-C20 aryl, wherein the two A groups of —N(A)2 and —CON(A)2 can be the same or different, and wherein R2 and R3 can together form a bond is provided; the process comprising reacting 5H-dibenz[b,f]azepine of the general formula wherein R1, R2, R3 and R4 have the aforementioned meanings, with one or more alkali or alkaline-earth cyanates and in the presence of one or more unsaturated dicarboxylic acids.
    • 制备以下通式的5H-二苯并[b,f]吖庚因-5-甲酰胺的方法:其中R 1,R 2,R 3和R 4相同或不同,并且可以是氢,卤素,硝基,氰基,羧基, -CO(R),-OCO(R),-O(R),-N(R)2,-CON(R)2和-COO(R) C10烷基,C3-C10环烷基,C2-C10烯基,C5-C10环烯基,C2-C10炔基和C6-C20芳基,其中-N(A)2和-CON(A)2的两个A基团可以是 提供相同或不同的,并且其中R2和R3可以一起形成键; 该方法包括将通式为其中R 1,R 2,R 3和R 4具有上述含义的5H-二苯并[b,f]吖庚因与一种或多种碱金属或碱土氰酸酯反应,并在一种或多种不饱和二羧酸存在下 酸。
    • 7. 发明授权
    • Process for the preparation of 4,4-dimethyl-6-ethynylthiochroman
    • 制备4,4-二甲基-6-乙炔基二氢苯并噻喃的方法
    • US07414143B2
    • 2008-08-19
    • US11158856
    • 2005-06-22
    • Bobba Venkata Siva KumarVishvas Dattatraya PatilChangdev Namdev RautShekhar Bhaskar BhirudBatchu Chandrasekhar
    • Bobba Venkata Siva KumarVishvas Dattatraya PatilChangdev Namdev RautShekhar Bhaskar BhirudBatchu Chandrasekhar
    • C07D335/04
    • C07D335/06
    • An improved process for the preparation of key intermediates for tazarotene, 4,4-dimethyl-6-ethynylthiochroman, is provided comprising (a) reacting 4,4-dimethyl-6-acetylthiochroman of the formula with an acid chloride and an amido-group containing compound of the general formula wherein R is hydrogen or a hydrocarbyl of from 1 to 15 carbon atoms and R1 and R2 can be the same or different and are hydrocarbyls of from 1 to 15 carbon atoms or R1 and R2 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms, or one of R1 and R2 together with the nitrogen atom to which it bonded are joined together with the carbonyl radical to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms to form a β-chloro vinyl carbonyl compound intermediate of the general formula wherein R has the aforestated meanings; and (b) reacting the β-chloro vinyl carbonyl compound intermediate with an alkali metal to provide the 4,4-dimethyl-6-ethynylthiochroman.
    • 提供了一种用于制备他扎罗汀4,4-二甲基-6-乙炔基二氢苯并噻喃的关键中间体的改进方法,其包括(a)使下式的4,4-二甲基-6-乙酰基二氢苯并二氢吡喃与酰氯和酰氨基 其中R是氢或1至15个碳原子的烃基,R 1和R 2可以相同或不同,并且是烃基的通式 1至15个碳原子或R 1和R 2与它们所键合的氮原子一起连接在一起形成杂环基,任选地含有一个或多个 另外的杂环原子或R 1和R 2中的一个与其键合的氮原子一起与羰基连接在一起形成杂环基,任选地含有 一个或多个另外的杂环原子以形成通式的β-氯乙烯基羰基化合物中间体其中R具有t 他提到意义 和(b)使β-氯乙烯基羰基化合物中间体与碱金属反应,得到4,4-二甲基-6-乙炔基二氢苯并噻喃。