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    • 1. 发明授权
    • Process for the condensation of compounds having silicon bonded hydroxy or alkoxy groups
    • 具有硅键合的羟基或烷氧基的化合物的缩合方法
    • US06753438B2
    • 2004-06-22
    • US10257507
    • 2002-10-11
    • Richard Gregory TaylorStuart LeadeyJean De La Croi Habimana
    • Richard Gregory TaylorStuart LeadeyJean De La Croi Habimana
    • C07F708
    • C08G77/08
    • The specification describes preparation of materials comprising selected boron anions and processes using them as catalysts for condensation reaction of compounds having silicon-bonded hydroxy or alkoxy groups. Preferred anion compounds comprise borates incorporating quadri-substituted boron in which the substituents include highly halogenated hydrocarbon groups for example pentafluorinated phenyl groups or bis (trifluoromethyl) phenyl groups. Preferred anions are {B(C6F5)4}− and {B(C6(CF3)2H3)4}−. The specification describes condensation in presence of these materials of compounds having at least one unit according to the general formula RoaR1bR2cSiO(4−(a+b+c)/2) in which each Ro is the same or different and represents a hydroxy, alkoxy, alkoxyalkoxy or hydrocarbonoxy group having up to 10 carbon atoms, each R1 is the same or different and represents hydrogen or a monovalent substituted or unsubstituted hydrocarbon group, each R2 is the same or different and represents a divalent substituted or unsubstituted alkylene or oxyalkylene group, a has a value of 1, 2, 3 or 4, b has a value of 0, 1, 2 or 3 and c has a value of 0, 1, 2 or 3.
    • 说明书描述了包含选定的硼阴离子的材料的制备和使用它们作为具有硅键合的羟基或烷氧基的化合物的缩合反应的催化剂的方法。 优选的阴离子化合物包括掺入四取代硼的硼酸盐,其中取代基包括高卤化烃基,例如五氟苯基或双(三氟甲基)苯基。 优选的阴离子是{B(C 6 F 5)4} - 和{B(C 6(CF 3)2 H 3)4} - 。 该说明书描述了在这些具有至少一个单元的化合物存在下,根据通式R a a a b b R 2 cSiO(4-(a + b + c)/ 2)的缩合,其中每个 R 0相同或不同,表示具有至多10个碳原子的羟基,烷氧基,烷氧基烷氧基或烃氧基,每个R 1相同或不同,表示氢或一价取代或未取代的烃基, R 2相同或不同,表示二价取代或未取代的亚烷基或氧化烯基,a的值为1,2,3或4,b的值为0,1,2或3,c为 值为0,1,2或3。
    • 5. 发明授权
    • Dimeric light stabilizers for polyolefines and polyolefine copolymers
    • 聚烯烃和聚烯烃共聚物的二聚光稳定剂
    • US06495622B1
    • 2002-12-17
    • US09722975
    • 2000-11-27
    • David George LeppardVien Van ToanRoland A. E. WinterMichela Bonora
    • David George LeppardVien Van ToanRoland A. E. WinterMichela Bonora
    • C07F708
    • C07C45/71C07C49/84C08K5/132C08L23/16C08L2205/02C08L23/00C08L2666/06C08L23/02
    • Compositions comprising A) a polyolefin or polyolefin copolymer, and B) a compound of the formula I wherein R1 is O or O—X—O; R2, R3, R4 and R5 independently are hydrogen, halogen, C1-C8alkyl, C1-C8alkoxy, SR10, SO2R10, phenyl, CF3, COOR11; and wherein R2 and R3 also may be OH; R6 and R7 are H or C1-C8alkyl; R8 and R9 are H, C1-C8alkyl or allyl; R10 is phenyl or C1-C12alkyl; R11 is C1-C8alkyl; C3-C50alkylene interrupted by one or more O; cyclohexyl; benzyl; allyl; X is C2-C18alkylene; C3-C12hydroxyalkylene; or a group selected from those of the formulae where D and D′ independently are a direct bond or C1-C3alkylene; and Y is O, S, SO2, or C1-C3alkylene, e.g. polyethylene films, are well stabilized against the effects of light, oxygen and heat. Some novel compounds of component B are valuable stabilizers for organic material against damage by light, oxygen and/or heat.
    • 包含A)聚烯烃或聚烯烃共聚物的组合物,和B)其中R1为O或OXO的式I化合物; R2,R3,R4和R5独立地为氢,卤素,C1-C8烷基,C1-C8烷氧基,SR10,SO2R10,苯基,CF3 ,COOR11; 并且其中R2和R3也可以是OH; R6和R7是H或C1-C8烷基; R8和R9是H,C1-C8烷基或烯丙基; R10是苯基或C1-C12烷基; R11是C1-C8烷基; C3-C50亚烷基被一个或多个O中断; 环己基 苄基; 烯丙基; X是C 2 -C 18亚烷基; C3-C12羟基亚烷基; 或选自式D和D'的基团的基团独立地为直接键或C 1 -C 3亚烷基; 并且Y是O,S,SO 2或C 1 -C 3亚烷基。 聚乙烯薄膜对光,氧和热的影响是很好的稳定的。 组分B的一些新型化合物是有机材料对光,氧和/或热的损害的有价值的稳定剂。
    • 9. 发明授权
    • Camptothecin analogs and methods of preparation thereof
    • 喜树碱类似物及其制备方法
    • US06455699B1
    • 2002-09-24
    • US09633561
    • 2000-08-07
    • Dennis P. CurranHubert JosienBom David
    • Dennis P. CurranHubert JosienBom David
    • C07F708
    • C07D471/14A61K31/437C07F7/0812C07F7/0814C07F7/083
    • The present invention provides generally a compound having the following general formula (1): wherein R1 and R2 are independently the same or different and are hydrogen, an alkyl group, an alkenyl group, a benzyl group, an alkynyl group, an alkoxyl group, an aryloxy group, an acyloxy group, —OC(O)ORd, wherein Rd is an alkyl group, a carbamoyloxy group, a halogen, a hydroxyl group, a nitro group, a cyano group, an azido group, a formyl group, a hydrazino group, an acyl group, an amino group, —SRc, wherein, Rc is hydrogen, an acyl group, an alkyl group, or an aryl group, or R1 and R2 together form a group of the formula —O(CH2)nO— wherein n represents the integer 1 or 2; R3 is H, F, a halogen atom, a nitro group, an amino group, a hydroxyl group, or a cyano group; or R2 and R3 together form a group of the formula —O(CH2)nO— wherein n represents the integer 1 or 2; R4 is H, F, a C1-3 alkyl group, a C2-3 alkenyl group, a C2-3 alkynyl group, or a C1-3 alkoxyl group; R5 is a C1-10 alkyl group, or a propargyl group; and R6, R7 and R8 are independently a C1-10 alkyl group, a C2-10 alkenyl group, a C2-10 alkynyl group, an aryl group or a —(CH2)NR9 group, wherein N is an integer within the range of 1 through 10 and R9 is a hydroxyl group, alkoxy group, an amino group, an alkylamino group, a dialkylamino group, a halogen atom, a cyano group or a nitro group; and pharmaceutically acceptable salts thereof.
    • 本发明通常提供具有以下通式(1)的化合物:其中R 1和R 2独立地相同或不同,为氢,烷基,烯基,苄基,炔基,烷氧基, 芳氧基,酰氧基,-OC(O)ORd,其中Rd为烷基,氨基甲酰氧基,卤素,羟基,硝基,氰基,叠氮基,甲酰基, 肼基,酰基,氨基,-SRc,其中Rc是氢,酰基,烷基或芳基,或者R1和R2一起形成式-O(CH 2)n O的基团 - 其中n表示整数1或2; R3是H,F,卤素原子,硝基,氨基,羟基或氰基; 或R 2和R 3一起形成式-O(CH 2)n O-的基团,其中n表示整数1或2; R4是H,F,C1-3烷基,C2-3烯基,C2-3炔基或C1-3烷氧基; R5是C1-10烷基或炔丙基; 并且R 6,R 7和R 8独立地为C 1-10烷基,C 2-10烯基,C 2-10炔基,芳基或 - (CH 2)NR 9基,其中N是在 1〜10,R9为羟基,烷氧基,氨基,烷基氨基,二烷基氨基,卤素原子,氰基或硝基; 和其药学上可接受的盐。