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    • 1. 发明授权
    • Processes for the synthesis of diprotected
R[R*,S*]-3,5-dihydroxy-6-oxohexanoate esters
    • 合成二保护R [R *,S *] - 3,5-二羟基-6-氧代己酸酯的方法
    • US4870199A
    • 1989-09-26
    • US166594
    • 1988-03-10
    • Kau-Ming ChenGoetz E. HardtmannPrasad K. KapaGeorge T. LeeJerome LinderSompong Wattanasin
    • Kau-Ming ChenGoetz E. HardtmannPrasad K. KapaGeorge T. LeeJerome LinderSompong Wattanasin
    • C07D209/18C07D233/54C07F7/18
    • C07D233/64C07D209/18C07F7/1852Y02P20/55
    • Process for the synthesis of compounds of the formula ##STR1## in R[R*,S*] enantiomeric form, wherein each P.sub.1 is independently an hydroxy group-protecting group, andR.sub.2z is C.sub.1-4 alkyl, benzyl or allyl,comprising, as a key step when R.sub.2z is R.sub.2x, the reaction of the compound of the formula ##STR2## in (S) enantiomeric form with a compound of the formulaMg.sup. .circle.+2 (.sup..crclbar. OOC--CH.sub.2 --COOR.sub.2x).sub.2to obtain a compound of the formula ##STR3## in (S) enantiomeric form, and, as a key step when R.sub.2z is R.sub.2y, the reaction of a compound of the formula ##STR4## in (S) enantioimeric form with a compound of the formulaLi.sup..sym..crclbar. CH.sub.2 --COOR.sub.2yto obtain a compound of the formula ##STR5## in (S) enantiomeric form, wherein R.sub.2x is primary or secondary C.sub.1-4 alkyl, benzyl or allyl,R.sub.2y is C.sub.1-4 alkyl not containing an asymmetric carbon atom, andR.sub.3 ' is methyl or ethyl,processes for the synthesis of compounds of the formula ##STR6## comprising reacting a compound of the formula ##STR7## with the reaction product of a strong base and a compound of the formula ##STR8## optionally followed by, when R.sub.2z is allyl, cleavage of the allyl and P.sub.1 groups to obtain the corresponding compound of the formula ##STR9## wherein each R.sub.7 is methyl or ethyl,R is as defined in the specification, and eachP.sub.1 independently and R.sub.2z are as defined above, andthe compounds of the formula ##STR10## wherein R and each R.sub.7 are as defined above.
    • 用于合成R [R *,S *]对映体形式的式“IMAGE”的化合物的方法,其中每个P1独立地是羟基保护基,R2z是C1-4烷基,苄基或烯丙基,包括作为 R2z为R2x时的关键步骤,式(S)对映异构形式的式(IMA)化合物与式Mg&cir&+2(( - )OOC-CH2-COOR2x)2的化合物的反应,得到化合物 式(S)对映体形式的式(IMAGE)式中,作为R2z为R2y的关键步骤,式(S)对映异构体形式的式“IMAGE”的化合物与式Li )( - )CH2-COOR2y,得到(S)对映异构体形式的下式的化合物,其中R2x是伯或仲C 1-4烷基,苄基或烯丙基,R2y是不含不对称碳原子的C 1-4烷基, 并且R 3'是甲基或乙基,用于合成式IMA化合物的方法包括使式IMA的化合物与强碱的反应产物 da化合物,其中当R 2z是烯丙基时,烯丙基和P1基团裂解,得到相应的式“IMAGE”化合物,其中每个R 7是甲基或乙基,R如说明书中所定义 ,每个P1独立地和R2z如上所定义,并且式“IMAGE”的化合物其中R和每个R 7如上所定义。
    • 5. 发明授权
    • Processes for the synthesis of 3-(substituted
indolyl-2-yl)propenaldehydes
    • 用于合成3-(取代的吲哚基-2-基)丙醛的方法
    • US5290946A
    • 1994-03-01
    • US980055
    • 1992-11-23
    • George T. LeePrasad K. KapaOljan Repic
    • George T. LeePrasad K. KapaOljan Repic
    • C07C51/367C07C59/48C07C223/02C07D209/12C07D209/24C07D233/54
    • C07D233/64C07C223/02C07C51/367C07C59/48C07D209/12C07D209/24
    • A process for synthesizing compounds of the formula ##STR1## utilizing, as intermediates, oxalyl chloride or bromide and compounds of the formulae R.sub.1 R.sub.2 N--CHO and CH.sub.2 .dbd.CH--O--R.sub.10 are processes for synthesizing compounds of the formula ##STR2## utilizing, as intermediates, compounds of Formula I wherein R.sub.1 is phenyl or substituted phenyl or intermediates in the synthesis of the compounds of formula I which intermediates have the formula ##STR3## wherein R.sub.1 is C.sub.1-3 alkyl, phenyl or phenyl substituted by 1 to 3 substituents each of which is independently C.sub.1-3 alkyl, C.sub.1-3 alkoxy, fluoro, chloro, bromo or nitro (maximum of two nitro groups),R.sub.2 is C.sub.1-3 alkyl,R.sub.10 is C.sub.1-6 alkyl,X.sup..crclbar. is chloride or bromide, andR.sub.3 -R.sub.6 are as defined in the specification.The compounds of Formula II are intermediates in the synthesis of known HMB-CoA reductase inhibitors which inhibit the biosynthesis of cholesterol and are useful as antihyperchloesterolemic agents.
    • 合成式(I)化合物的方法利用草酰氯或溴化物作为中间体,式R1R2N-CHO和CH2 = CH-O-R10的化合物是合成下式化合物的方法: (II)使用式I化合物,其中R 1是苯基或取代的苯基或中间体在合成式I化合物中的中间体具有下式其中R 1是C 1-3烷基,苯基或苯基取代 1至3个取代基,各自独立地为C 1-3烷基,C 1-3烷氧基,氟,氯,溴或硝基(最多为两个硝基),R 2为C 1-3烷基,R 10为C 1-6烷基,X( - )为 氯化物或溴化物,和R3-R6如说明书中所定义。 式II化合物是合成已知的抑制胆固醇生物合成的HMB-CoA还原酶抑制剂的中间体,可用作抗高胆固醇酯剂。