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公开(公告)号:KR1020000049811A
公开(公告)日:2000-08-05
申请号:KR1020000023417
申请日:2000-05-02
IPC: C07B55/00
CPC classification number: C07B55/00
Abstract: PURPOSE: A stereo-selective method for preparing (R)-(-)-muscone with high optical purity and high yield is provided. CONSTITUTION: A method for preparing (R)-(-)-muscone comprises steps of: (i) reacting 4-(cis-2, 6-dimethylpiperidine)-(R)-dinaphtodioxaphosphepin of the following formula (I) and 4-(R, R-2, 5-diphenylpyrrolidine)-(R)-dinaphtodioxaphosphepin of the following formula (II) with Cu(OTf)2 to form a complex with copper; and (ii) 1, 4-addition reacting dimethylzinc with 2-cyclopentadecenone using the complex of step (i) as a chiral catalyst.
Abstract translation: 目的:提供用于制备具有高光学纯度和高产率的(R) - ( - ) - 肌肉的立体选择性方法。 构成:制备(R) - ( - ) - 肌肉酮的方法包括以下步骤:(i)使下式(I)的4-(顺式-2,6-二甲基哌啶) - (R) - 二盐基二磷杂螺环和4- (II)的(R,R-2,5-二苯基吡咯烷) - (R) - 二萘氧基磷杂苯基与Cu(OTf)2形成与铜的络合物; 和(ii)使用步骤(i)的络合物作为手性催化剂,使二甲基锌与2-环戊烯酮1,4-加成反应。
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公开(公告)号:KR1019930005413B1
公开(公告)日:1993-06-21
申请号:KR1019910003947
申请日:1991-03-12
Applicant: 한국과학기술원
IPC: C07D251/56
Abstract: The method for preparing melamine comprises reacting a quanidine deriv. of formula (I) with hexamethyldisilazane (HMDS) as a catalyst and a solvent. In (I), R1 and R2=H, methyl or ethyl; if one of R1 and R2 is ethyl, the other is H. The quanidine deriv. of formula (I) is prepd. by reacting carbonate, chlorate, sulfate or nitrate of the cpd. with a methanol soln. of sodium methoxide. Melamine is a useful compound in the synthesis of aminoplastic polymers, dyestuffs, papers, paints or agricultural chemicals.
Abstract translation: 制备三聚氰胺的方法包括使喹啉衍生物反应。 式(I)与六甲基二硅氮烷(HMDS)作为催化剂和溶剂。 在(I)中,R 1和R 2 = H,甲基或乙基; 如果R1和R2之一是乙基,另一个是H. 式(I)的化合物是制备的。 通过使cpd的碳酸盐,氯酸盐,硫酸盐或硝酸盐反应。 与甲醇溶胶。 的甲醇钠。 三聚氰胺是合成氨基聚合物,染料,纸张,油漆或农药的有用化合物。
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公开(公告)号:KR1019920008616B1
公开(公告)日:1992-10-02
申请号:KR1019900011009
申请日:1990-07-19
IPC: C07D277/28 , C07D277/58
Abstract: A method for preparing heterocyclic halide of formula (I), (II) and (III) comprises a diamino-substitution reaction of heterocyclic primary amine with CuCl2 (or CuBr2) and t- butylthionitrite (t-BuSNO) or t-butylthionitrate (t-BuSNO2) in an organic solvent. In the formulas, X=Cl or Br; R= benzyl or ribose. Pref. the molar ratio of heterocyclic primary amine:CuCl2 (or CuBr2):t-BUSNO (or t-BuSNO2) is 1:2:2.
Abstract translation: 制备式(I),(II)和(III)的杂环卤化物的方法包括杂环伯胺与CuCl 2(或CuBr 2)和叔丁基硫代亚硝酸酯(t-BuSNO)或硫酸叔丁酯(t)的二氨基取代反应 -BuSNO2)在有机溶剂中。 在式中,X = Cl或Br; R =苄基或核糖。 县。 杂环伯胺:CuCl 2(或CuBr 2):t-BUSNO(或t-BuSNO 2)的摩尔比为1:2:2。
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公开(公告)号:KR1019920005743B1
公开(公告)日:1992-07-18
申请号:KR1019900011010
申请日:1990-07-19
Applicant: 한국과학기술원
IPC: C07D473/02 , C07D473/40
Abstract: A method for preparing fluorinated purine nucleic acids of formula (I) comprises a deamino-substitution reaction of a purine nucleic acid of formula (II) by use of tetrafluoro sodium borate and a cpd. of formula t-BuSNOn (where n = 1 or 2) in the presence of acetonitrile. In the formulas, R= triacetyl ribose or thyl; X= methylamine, H or F; Y=OH or F; Z=H or Br; X'= methylamine, H or amine; Y'=OH or amine. Pref. the molar ratio of (II): tetrafluoro sodium borate: t-BuSNOn is 1:2:2. The cpds. (I) have antivirial, antibacterial and anticancer activities.
Abstract translation: 制备式(I)的氟化嘌呤核酸的方法包括使用四氟硼酸钠和cpd的式(II)的嘌呤核酸的脱氨基取代反应。 的式t-BuSNO n(其中n = 1或2)。 在式中,R =三乙酰基核糖或三 X =甲胺,H或F; Y = OH或F; Z = H或Br; X'=甲胺,H或胺; Y'= OH或胺。 县。 (II):四氟硼酸钠:t-BuSNO n的摩尔比为1:2:2。 cpds。 (一)具有抗病毒,抗菌,抗癌活性。
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公开(公告)号:KR100050651B1
公开(公告)日:1992-04-08
申请号:KR1019890020247
申请日:1989-12-29
Applicant: 한국과학기술원
IPC: C07D405/04
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公开(公告)号:KR100050650B1
公开(公告)日:1992-04-08
申请号:KR1019890020246
申请日:1989-12-29
Applicant: 한국과학기술원
IPC: C07D487/04 , C07D473/40
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公开(公告)号:KR1019920002599A
公开(公告)日:1992-02-28
申请号:KR1019900011010
申请日:1990-07-19
Applicant: 한국과학기술원
IPC: C07D473/02 , C07D473/40
Abstract: 내용 없음
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公开(公告)号:KR1019910009957B1
公开(公告)日:1991-12-07
申请号:KR1019890020247
申请日:1989-12-29
Applicant: 한국과학기술원
IPC: C07D405/04
CPC classification number: C07D405/04
Abstract: A method for preparing 2-furylpyrimidine derivs. of formula (I) and (II) comprises sililating a cpd. of formula (III), and reacting it with 2-acetoxy tetrahydrofurane of formula (IV) in an organic solvent in the presence of cesium chloride. In (I), X = O or S; R1 and R2 each = O, NH2, F, Br, CH3 or H. In (II), X = O; R1 and R2 each = O, H, F or CH3. In (III), X = O or S; R1 and R2 each = O, NH2, F, Br, CH3 or H. Pref. the organic solvent is acetonitrile. The molar ratio of cesium chloride to the pyrimidine cpd. of formula (III) is 7-12 %. Cpds. (I) and (II) have anticancer activity.
Abstract translation: 2-呋喃基嘧啶衍生物的制备方法。 式(I)和(II)的化合物包括将cpd粉化。 的式(III)化合物,并使其与式(IV)的2-乙酰氧基四氢呋喃在有机溶剂中在氯化铯存在下反应。 在(I)中,X = O或S; R 1和R 2各自为O,NH 2,F,Br,CH 3或H.在(II)中,X = O; R1和R2各自为O,H,F或CH3。 在(III)中,X = O或S; R1和R2各自为O,NH2,F,Br,CH3或H. 有机溶剂为乙腈。 氯化铯与嘧啶cpd的摩尔比。 的式(III)为7-12%。 CPDS。 (I)和(II)具有抗癌活性。
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公开(公告)号:KR1019900007245B1
公开(公告)日:1990-10-06
申请号:KR1019880003073
申请日:1988-03-22
Applicant: 한국과학기술원
IPC: C07D473/02 , C07D473/18
Abstract: Acyclic purine derivatives of formula (I) are prepared by silylating purine and alkylating the obtd. intermediate in the presence of zinc iodide and organic solvent. In (I), X is -SH or -NH2; Y is -SH or - NH2; Z is 2-acetoxyethylacetoxymethyl or oacetylmethyl-1,3-di-o- benzyl glycerol gp. (I) have antiviral, antitumor and antibacterial activity.
Abstract translation: 式(I)的非环嘌呤衍生物通过使嘌呤甲硅烷基化和烷基化来制备。 在碘化锌和有机溶剂存在下中间体。 在(I)中,X是-SH或-NH 2; Y是-SH或-NH2; Z是2-乙酰氧基乙基乙酰氧基甲基或乙酰基甲基-1,3-二-O-苄基甘油gp。 (I)具有抗病毒,抗肿瘤和抗菌活性。
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公开(公告)号:KR1019900006299A
公开(公告)日:1990-05-07
申请号:KR1019880013576
申请日:1988-10-18
Applicant: 한국과학기술원
IPC: C07D239/32
Abstract: 내용 없음.
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