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    • 71. 发明授权
    • Method for producing &agr;-hydroxy-&bgr;-aminocarboxylic acids
    • α-羟基-β-氨基羧酸的制备方法
    • US06169200A
    • 2001-01-02
    • US09186272
    • 1998-11-05
    • Takayuki SuzukiYutaka HondaKunisuke Izawa
    • Takayuki SuzukiYutaka HondaKunisuke Izawa
    • C07C31728
    • C07C323/29C07C317/28C07C327/30
    • The present invention provides a simple and inexpensive method for producing &agr;-hydroxy-&bgr;-aminocarboxylic acids and their esters. An ester of an N-protected &agr;-amino acid ester is converted into a &bgr;-ketosulfoxide, which is then processed with an acid to give an &agr;-ketohemimercaptal. Next, this is acylated and then processed with a base to obtain an N-protected &agr;-acyloxy-&bgr;-amino-thioester, which is then saponified to obtain an intended compound. According to the method of the present invention, it is possible to produce &agr;-hydroxy-&bgr;-aminocarboxylic acid derivatives, which are intermediates in producing various HIV protease inhibitors, renin inhibitors and carcinostatics, from a-amino acids. The method comprises reduced reaction steps, the selectivity in the method to give the intended product is high, and the yield of the product obtained is high.
    • 本发明提供了用于生产α-羟基-β-氨基羧酸及其酯的简单和便宜的方法。将N-保护的α-氨基酸酯的酯转化为β-氧亚砜,然后用酸处理 给予α-酮基咪唑。 接下来,将其进行酰化,然后用碱处理,得到N-保护的α-酰氧基-β-氨基 - 硫代酯,然后皂化,得到目的化合物。 根据本发明的方法,可以生产α-羟基-β-氨基羧酸衍生物,它们是从α-氨基酸生产各种HIV蛋白酶抑制剂,肾素抑制剂和制癌剂的中间体。 该方法包括减少反应步骤,得到所需产物的方法中的选择性高,所得产物的产率高。
    • 73. 发明授权
    • Cowling brace of motorcycle
    • 摩托车的大括号
    • US5979966A
    • 1999-11-09
    • US50178
    • 1998-03-30
    • Takayuki Suzuki
    • Takayuki Suzuki
    • B62J17/00B62K19/48
    • B62K19/48B62J17/00
    • A motorcycle is provided with a cowling brace having a sub-frame structure for attaching a cowling and a cowling peripheral part to a front head portion of a body frame of a motorcycle. The cowling brace is composed of a front brace member integrally formed of a synthetic resin material, a rear brace member assembled by using a metal material to be combined with the front brace member, a front fixture member formed integrally with the front brace member and adapted to fix the cowling and the cowling peripheral part, and a rear fixture member formed to rear brace member and adapted to fix the rear brace member to the body frame of the motorcycle.
    • 摩托车设置有具有子框架结构的整流罩支架,用于将整流罩和整流罩周边部分附接到摩托车的车身框架的前头部。 整流罩支架由由合成树脂材料一体形成的前支撑构件,通过使用与前支撑构件组合的金属材料组装的后支撑构件构成,前固定构件与前支撑构件一体地形成并适应 固定整流罩和整流罩周边部分,以及形成在后支撑构件上并适于将后支撑构件固定到摩托车的车体框架上的后固定构件。
    • 80. 发明授权
    • Thermal transfer recording method reducing ground staining and improving
ink transferability
    • 热转印记录方法减少地面染色和改善油墨转移性
    • US5268704A
    • 1993-12-07
    • US905527
    • 1992-06-29
    • Tetsuo HasegawaTakayuki SuzukiNaoki KushidaYoshihisa Takizawa
    • Tetsuo HasegawaTakayuki SuzukiNaoki KushidaYoshihisa Takizawa
    • B41J2/32B41J31/00B41M5/395
    • B41M5/395
    • Thermal transfer recording is improved by a recording method involving providing a thermal transfer material having a support and an ink layer disposed thereon and which in turn includes a binder and a colorant. The binder includes 45-70 wt. % of an ethylene-vinyl acetate copolymer, 25-50 wt. % of a wax, and 7-12 wt. % of a tackifier based on a total weight of the binder. The ink layer has a breakdown strength of 30-80 kg/cm.sup.2 at 25.degree. C. The method also involves contacting an ink layer side of the thermal transfer material with a recording medium, supplying a pattern of energy from a recording head to the thermal transfer material, and separating the thermal transfer material from the recording medium to leave a transferred image on the recording medium. The thermal transfer material moves in a unit period of time by a first distance relative to the recording head which is smaller than a second distance through which the recording medium moves relative to the recording head in the same unit period of time.
    • 通过提供具有支撑体的热转印材料和设置在其上的油墨层并且还包括粘合剂和着色剂的热转印材料的记录方法来改进热转印记录。 粘合剂包括45-70wt。 %的乙烯 - 乙酸乙烯酯共聚物,25-50wt。 %的蜡,和7-12wt。 基于粘合剂的总重量的增粘剂的%。 油墨层在25℃下的击穿强度为30-80kg / cm2。该方法还包括使热转印材料的油墨层与记录介质接触,将记录头的能量图案提供给热 转印材料,并将热转印材料与记录介质分离,以将转印图像留在记录介质上。 热转印材料在单位时间内相对于记录头移动第一距离,该距离小于记录介质在相同的单位时间内相对于记录头移动的第二距离。