CN1147258A - 通过4-硝基-△4-3-酮甾类化合物制备4-氨基-△4-3-酮甾类化合物的方法 - Google Patents
通过4-硝基-△4-3-酮甾类化合物制备4-氨基-△4-3-酮甾类化合物的方法 Download PDFInfo
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- CN1147258A CN1147258A CN95192882A CN95192882A CN1147258A CN 1147258 A CN1147258 A CN 1147258A CN 95192882 A CN95192882 A CN 95192882A CN 95192882 A CN95192882 A CN 95192882A CN 1147258 A CN1147258 A CN 1147258A
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- hydrogen
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- nitro
- steroid
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- 238000000034 method Methods 0.000 title claims description 54
- 230000008569 process Effects 0.000 title claims description 12
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- 150000003431 steroids Chemical class 0.000 claims abstract description 28
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- 108090000856 Lyases Proteins 0.000 claims abstract description 24
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 230000000802 nitrating effect Effects 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract 7
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- 239000001257 hydrogen Substances 0.000 claims description 48
- -1 propoxy- Chemical class 0.000 claims description 47
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- 238000006243 chemical reaction Methods 0.000 claims description 36
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 17
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
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- VYAWSRKBHHHYEK-UHFFFAOYSA-L potassium sodium hydrogen phosphate 2-hydroxypropane-1,2,3-tricarboxylic acid Chemical compound [Na+].[K+].OP([O-])([O-])=O.OC(=O)CC(O)(C(O)=O)CC(O)=O VYAWSRKBHHHYEK-UHFFFAOYSA-L 0.000 description 1
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- IHOBBYHEOBWAPZ-UHFFFAOYSA-L steroid c Chemical compound [Na+].[Na+].C1CC2CC(OS([O-])(=O)=O)C(OS([O-])(=O)=O)CC2(C)C(CCC23C)C1C3CC(O1)C2C2(C)OC1OC2CC(C(C)C)=C(C)C IHOBBYHEOBWAPZ-UHFFFAOYSA-L 0.000 description 1
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- 235000002906 tartaric acid Nutrition 0.000 description 1
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- 150000003509 tertiary alcohols Chemical class 0.000 description 1
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- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0005—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring the nitrogen atom being directly linked to the cyclopenta(a)hydro phenanthrene skeleton
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P37/04—Immunostimulants
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- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0005—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring the nitrogen atom being directly linked to the cyclopenta(a)hydro phenanthrene skeleton
- C07J41/0011—Unsubstituted amino radicals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0033—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005
- C07J41/0066—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 the 17-beta position being substituted by a carbon atom forming part of an amide group
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Abstract
本发明提供了4-硝基-△4-3-酮甾类化合物,其作为C17-20裂解酶、C17α-羟化酶和5α-还原酶抑制剂的用途以及制备通式(I)化合物的新方法,顺序包括:a)将通式(II)起始化合物与有效量的强碱在升高的或适当温度下反应足够时间以生成相应的热力学二烯醇,然后加入中性硝化试剂制备4-硝基-甾类化合物;然后b)将4-硝基甾类化合物与适当还原剂反应。
Description
发明背景
本发明发明主要涉及雄激素和/或雌激素抑制剂的化合物,其用于抑制C17-20裂解酶、C17α-羟化酶和5α-还原酶,以及制备4-氨基-Δ4-3-酮甾类的方法。
雄激素和雌激素的生物合成主要通过C17-20裂解酶和C17α-羟化酶双重作用酶甾体控制。当C17-20裂解酶催化17β位有二个碳侧链的甾类转化时,C17α-羟化酶则将该分子的羟基置于17α位。C17-20裂解酶的作用在于可产生形成睾酮、5α-二氢睾酮和雌激素(主要是雌酮与雌二醇)的重要前体分子。对C17-20裂解酶的有效抑制则会抑制雄激素和雌激素的形成,因此可用于治疗所述雄激素和/或雌激素起不良作用的病理状态或疾病。
酶甾体5α-还原酶催化睾酮转化为二氢睾酮或DHT(17β-羟基-5α-雄烷-3-酮)。DHT是比睾酮更有效的一种雄激素,其在某些组中用作末器官效应器,特别是调节生长。对这种酶的有效抑制则会防止DHT的形成,因此可用于治疗雄激素依赖性疾病,特别是DHT起重要副作用的疾病。
上述抑制剂影响雄激素和/或雌激素形成途径中的各个步骤,已知它们可有效治疗雄激素和/或雌激素依赖性疾病,因此合成上述抑制剂的另外技术也是有用的。可按照本说明书描述的方法获得的某些4-氨基甾体衍生物公开在美国专利4,757,061(1988年7月12日发行);美国专利5,120,840(1992年6月9日发行);美国专利号5,143,909(1992年9月1日发行)。所公开的这些化合物三步合成法包括4,5-环氧甾体衍生物的生成,然后用叠氮化钠处理生成4-叠氮化甾体衍生物。其后4-叠氮化甾体衍生物还原形成4-氨基甾体衍生物。该合成所用叠氮化钠由于此化合物本身的不稳定性,因此对健康有害。专业化学家可在实验室小规模安全进行上述过程,因为只使用少量的叠氮化钠。然而4-氨基甾体衍生物的大规模工业生产需要大量的叠氮化钠及其衍生酸-叠氮酸。这个需要大量叠氮化钠和叠氮酸在升高温度下的合成就会对人类和环境产生重大危害。通过对化工厂的合理设计可减轻对环境和人类的危害,然而这种措施的代价过高,其根本性的危害仍不能完全消除。通过4-叠氮化中间体三步合成4-氨基-Δ4-甾类化合物的过程如方案A所示:
先前试图硝化Δ4-3-酮甾类化合物(由Schaub等在Tetrahedron20:373(1964)和Suginome等在J.βull.Chem.Soc.Jap.62:1343(1989)中描述)而得到相应的2-硝基甾类化合物。推测是由于硝化作用是通过动力学的2,4-二烯醇影响而不是通过热力学二烯醇-3,5-二烯醇。4-硝基甾类化合物的生成需要那些有利于3,5-二烯醇而不利于2,3-二烯醇生成的条件。
发明概述
本发明提供了一种通过形成4-硝基-3-酮甾类制备4-氨基-3-酮甾类的新方法,而4-硝基-3-酮甾类是相应的2,5-二烯醇硝化的产物。
R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,环丙氨基,乙酰硫代链烷基,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇基;R1是氢,羟基或C1-6烷基;R和R1一起表示=O,即一个氧原子以双键连接在17位碳上;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R5和R6可一起表示=O,即一个氧原子以双键连接在11位碳上;R7是氢或C1-C8烷基;R8是C1-C8烷基;环上的符号
表示该键是单键或双键;符号或
表示取代基是α构型(向纸平面里);符号或
表示取代基是β构型(向纸平面外);其中另外如下限定:
当R是OH时,R1是氢;当R5是OH时,R6是氢;
因此包括:
b)将4-硝基甾类化合物与适当还原剂反应;以及
c)选择性将4-氨基甾类化合物转化为可药用盐。
其中:
R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,环丙氨基,乙酰硫代链烷基,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇基;
R1是氢,羟基或C1-6烷基;
R和R1一起表示=O,即一个氧原子以双键连接在17位碳上;
R2,R3和R4是彼此独立的氢或C1-6烷基;
R5和R6是彼此独立的氢或OH;
R5和R6可一起表示=O,即一个氧原子以双键连接在11位碳上;
R7是氢或C1-C8烷基;
当R是OH时,R1是氢;当R5是OH时,R6是氢。
本发明另外提供了抑制甾类化合物C17-20裂解酶、C17α-羟化酶和/或5α-还原酶的方法,该方法包括给予有效量的本发明化合物。发明详述
起始物是已知的或可用已知技术得到。
本文所用术语“C1-C6链烷酰基”是指1至6个碳原子的直链或支链烷酰基。该术语所属范围中包括有甲酰基,乙酰基,丙酰基,丁酰基,异丁酰基,己酰基等。
本文所用术语“C1-C4链烷醇基”是指1至4个碳原子的直链或支醇基,至少含有一个羟基官能团,但是连接到每个碳原子上的羟基不超过一个。该术语所属范围中包括有甲醇基,乙醇基,正丙醇基,异丙醇基,正丁醇基,2-丁醇基,2-甲基-1-丙醇基,2-甲基2-丙醇基,1,2-二羟基乙醇基,1,3-二羟基异丙醇基等。
本文所用术语“C1-C6烷基”是指1至6个碳原子的饱和直链或支链烃基。该术语所属范围中包括有甲基,乙基,正丙基,异丙基,正丁基,异丁基,叔丁基,正戊基,正己基等。
本文所用术语“C1-C8烷基”是指1至8个碳原子的饱和直链或支链烃基。该术语所属范围中有甲基,乙基,正丙基,异丙基,正丁基,异丁基,叔丁基,正戊基,正己基,正庚基,正辛基等。
本文所用术语“C1-C4链烷硫醇基”是指含有硫醇官能团的1至8个碳原子的饱和直链或支链烃基。该术语所属范围中有甲硫醇基,乙硫醇基,丙烷硫基醇,异丙烷硫醇基,正丁烷硫醇基,异丁烷硫醇基,叔丁烷硫醇基等。
本文所用术语“乙酰硫代链烷基”是指含有一个乙酰硫醇官能团的1至8个碳原子的饱和直链或支链烃基基团。该术语所属范围中有乙酰硫甲基,乙酰硫乙基,乙酰硫丙基,乙酰硫异丙基,乙酰硫丁基,乙酰硫异丁基,乙酰硫叔丁基其类似物。
本文所用术语“C1-C6链烷酰氧基”是指含有羧基官能团的1至6个碳原子的饱和直链或支链烃基。该术语所属范围中有甲酰氧基, 乙酰氧基,丙酰氧基,异丙酰氧基,正丁酰氧基,仲丁酰氧基,叔丁酰氧基,正戊酰氧基,仲戊酰氧基,叔戊酰氧基,正己酰氧基等。
本领域的普通专业人员易于确定本文所用术语“可药用盐”,其是指对患者不产生严重毒性的的酸加成盐,同时其具有理想的操作及制备特性。这些盐可以是无机盐或有机盐,可以是水合的或基本上无水的。可生成合适盐的无机酸有盐酸,氢溴酸,硫酸,磷酸以及金属盐,例如磷酸一氢钠和硫酸氢钾。可生成合适盐的有机酸有一、二、三羧酸。这种酸的实例有但不局限于如乙酸, 乙醇酸,乳酸,丙酮酸,丙二酸,琥珀酸,戊二酸,富马酸,苹果酸,酒石酸,柠檬酸,抗坏血酸,马来酸,羟基马来酸,苯甲酸,羟基苯甲酸,苯乙酸,肉桂酸,水杨酸,2-苯氧基苯甲酸和磺酸,例如甲磺酸和2-羟基苯甲酸、2-羟基乙磺酸。
以上反应方案表示本发明的过程,其中首先将Δ4-3-酮与有效量的足够强度的碱生成Δ4-二烯醇而硝化成相应的4-硝基化合物。“有效量的强碱”是指可在适当反应条件下将Δ4-3-酮起始物转化为其热力学二烯醇的具有适当强度和浓度的碱。
当选择合适的反应条件时,合适碱及其浓度是其它反应条件的函数,例如取代基的数目和类型,反应时间,溶剂和所用温度。就是说,通过甾类化合物6位碳的脱质子作用而形成热力学二烯醇中间体的主要参数如下说明。可用的“强碱”范围包括醇化金属等,但是优选3到6个碳原子的支链醇的盐。最优选含有3到5个碳原子的支链醇。例如叔丁醇钾。
强碱的“有效量”随甾类化合物上酸性质子数目的不同而变化。“酸性质子”是易于离解,例如OH,CO2H,NH。对于每个酸性质子而言,需要一份等当量的碱。当使用本文所述的典型碱和含甾类化合物的“非酸性质子”时,相对于甾类化合物的含量至少为2摩尔当量。优选2至4摩尔当量,最优选2摩尔当量(除酸性质子外)。
在硝化反应产生二烯醇中间体的过程中,本领域的普通专业人员会意识到反应温度与时间之间的变动范围。在升高的温度下需要较短的反应时间,而在低温下则需较长时间。在本发明的实践中,“升高的温度”为约50℃到约100℃,优选50℃到83℃,最优选的反应温度是约83℃。在升高的温度下,“足以生成相应的热力学二烯醇的时间”为约15分钟到8小时,优选约15分钟到180分钟,最优选的反应时间是约60分钟。
在低温下,“适当的温度”范围为约15℃到约50℃,优选约17℃到约30℃,最优选约20℃到约25℃。在这些温度下,“足以生成相应的热力学二烯醇的时间”约为15分钟到48小时,优选约1小时到24小时,最优选约10到24小时。使用较低反应温度和较长反应时间可提高反应产率,其为本发明实践所优选。由于本发明的过程中适宜使用的某种溶剂的凝固点可能低于以上温度范围的最低点,所以在反应处于这些低温前,有必要将溶剂微热或与其中一种反应物混合。
影响硝化反应的合适溶剂可以是任何2到5个碳原子的直链或支链烷烃衍生出的醇。尤其是仲醇和叔醇。例如,当乙醇或异丙醇可优选使用时,更优选叔戊醇和叔丁醇。最优选的溶剂是叔丁醇。
硝化反应能受任一中性硝化试剂的影响,例如硝酸烷基酯。对特殊硝酸烷基酯的选择取决于对其反应活性和价格的考虑。合适的硝酸烷基酯可以是3到8个碳原子的任一饱和直链或支链有机硝酸酯。优选的硝酸烷基酯包括硝酸异丙酯,硝酸异丁酯和己基硝酸2-乙酯。最优选的适当硝酸烷基酯是硝酸异丙酯。
可通过任何已知方法用适当还原剂还原4-硝基甾类化合物,包括,例如化学性的或是催化性的方法。典型的化学催化剂包括:1)乙酸中的金属锌;2)在有或无氯化铵存在下的甲醇中的金属锌;3)乙醇中的氯化亚锡;或4)乙醇中的铁和乙酸。有效的催化系统包括在醇溶剂如乙醇中的Lindlar催化剂(用铅和喹啉“毒化”过的碳酸钙上的钯)。其他可用于催化氢化作用的系统,例如在甲醇中活性炭和甲酸铵上的钯,在乙醇中活性炭和三氟乙酸上的钯,或在乙醇中硫酸钡上的钯。
本发明化合物作为甾类化合物C17-20裂解酶抑制剂的体外酶抑制活性是用大鼠或cynomolgus猴的睾丸组织酶微粒体制剂建立的。从cynomolgus猴或大鼠的睾丸组织分离得微粒体。将待测试化合物溶于二甲基亚砜中,并在0.05M磷酸钾缓冲液(cynomolgus猴裂解酶活性的pH为7.4,大鼠裂解酶活性的pH为7.2)中稀释得测试化合物所需的浓度。DMSO最终测试浓度为0.1%(v/v)。含有NADPH再生系统的检测包括1M NADPH,5mM葡萄糖-6-磷酸盐,1IU/mL葡萄糖-6-磷酸脱氢酶和微粒体蛋白,总体积为0.2mL。
为了确定时间依赖性C17-20裂解酶失活作用,将测试化合物用20到62μg/mL微粒体蛋白、0.05M磷酸钾缓冲液(pH7.4)和上述NADPH再生系统在34℃培养0至40分钟。然后每次等份除去180uL,用于酶活性分析。将每一等份加到[7-3H]-17α-羟基孕甾烯醇酮中(11.2mCi/mmole;0.2μCi每份试剂),另加未标记的17α-羟基孕甾烯醇酮使每份总底物浓度为0.3μM,然后在34℃培养6分钟。为了确定测试化合物可逆的抑制作用,同时将底物和抑制剂(或DMSO的缓冲液作为对照)加到另外的分析组分中引发反应。用于cynomolgus猴裂解酶的底物是7-3H-17α-羟基孕甾烯醇酮,底物的最终浓度为0.3μM。对于大鼠裂解酶活性分析而言,所用的底物是[1,2-3H]-17α-羟基孕甾烯醇酮,总底物浓度为0.1μM(Km=0.095μM)。将用于大鼠和猴裂解酶的全部试样在34℃培养6分钟。
作为5α-还原酶抑制剂的本发明化合物的活性是用实验室动物前列腺组织中的5α-还原酶微粒体制剂测定的。确切地,微粒体是从cynomolgus猴前列腺组织中分离出来的。在使用样品前应测定微粒体制剂的蛋白浓度。cynomolgus猴前列腺5α-还原酶活性的各个试样含有0.1M磷酸钾-柠檬酸钠缓冲液(pH5.6),0.1%牛血清清蛋白(W/V),1.0mM EDTA钠,7到96mg微粒体蛋白,1.0mM NADPH,5.0mM葡萄糖-6-磷酸盐,11U/mL葡萄糖-6-磷酸盐脱氢酶,[1,2-3H]-睾酮(0.15μCi),未标记的睾酮以获得所需底物浓度,将溶于DMSO的抑制剂在0.1M柠檬酸钾-柠檬酸钠(50∶50)缓冲液(PH5.6)中稀释而使最终试样中DMSO的浓度为0.1%(V/V)。将不含抑制剂的相同缓冲液和DMSO用作对照试样。从含有除酶以外所用组分的试样中确定放射性本底。重复分析。加入睾酮引发反应并在Dubnoff震荡保温器于25℃培养30分钟。试样的总体积为100uL。在这些条件下,试样与时间(30分钟)成线性。
将待测抑制作用的化合物同时与睾酮加入。为测定IC50,选用在Km水平为单一浓度的睾酮。睾酮的Km值可用多种实验测定,对于cynomolgus5α-还原酶而言,其范围是0.025μM到0.091μM。
加入5mL氯仿∶甲醇(2∶1)终止每份分析试样。然后相每份试样中加入代表底物和产物的载体甾类化合物(每份2.5ug)和0.8mL蒸馏、去离子水。用于裂解酶分析的载体甾类化合物是17α-羟基孕甾烯醇酮、脱氢表雄甾酮和雄甾-5-烯-3β,17β-二醇(cynomolgus 猴裂解酶试样)或17α-羟基孕甾酮、雄甾二酮和睾酮(大鼠裂解酶试样)。将睾酮,二氢睾酮和3,17-雄甾二醇加到5α-还原酶试样中中作为载体甾类化合物。放射性标记和未标记的甾体化合物通过Moore和Wilson方法提取(Methods inEnzymol.,eds O’malley,B.W.and Hardlan,J.G.36,1975,pp466-473)。用氯气蒸发含有甾类化合物的有机相。对于裂解酶分析而言,将残余物溶于18%四氢呋喃(V/V)的己烷溶液中。对于5α-还原酶分析而言,将干燥后的甾类残余物溶于3%(V/V)异丙醇的己烷溶液中。然后在LiCrosorbDIOL衍生的硅胶柱上(10uM;4×250mm),通过正相HPLC将甾类化合物分离,用3%到7.5%异丙醇的己烷溶液梯度洗脱,然后在75%(v/v)异丙醇的己烷溶液isocratic状态下进行。用可用于裂解酶和5α-还原酶试样的RadiomaticModel HS或Model A515Flo-One探测器测量甾类化合物峰值的放射性。
用底物转化为产物的百分数计算每个试样的酶活性,结果通过对照的抑制百分数来表达。将这些实验数据代入适当的二参数模型及抑制剂的6个浓度值来测定IC50值。当用以上过程测试化合物后,得到以下结果:(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮对猴睾丸C17-20裂解酶的IC50为41nM,大鼠睾丸C17-20裂解酶是86nM,猴前列腺5α-还原酶是17nM。当用cynomolgus猴睾丸裂解酶通过以上过程测试测试化合物时,得到下述结果:
化合物 | 预培养时间 | 浓度(uM) | %抑制 |
17β-环丙氧基-4-硝基雄甾-4-烯-3-酮 | 040 | 10.110.1 | 78369579 |
(20S)-20-巯基甲基-4-硝基孕甾-4-烯-3-酮 | 040 | 10.110.1 | 6909326 |
在甾类化合物C17-20裂解酶、5α-还原酶和/或C17α-羟化酶的抑制作用中,“有效抑制量”是指达到酶抑制效果的化合物量。达到所需抑制水平所必需的确切量是酶浓度、表面积、温度和其它典型实验参数的函数,并且是本领域普通技术人员所知的实验变量。一般地,当将这些化合物给予实际患者时,最小有效量就是达到治疗效果的量。所给化合物的确切量可在大范围内变化,主要取决于患者的类型和程度。例如,根据待治疗患者和所治疗疾病的严重性,所给予的化合物的有效抑制量可从每天每公斤体重约0.625至62.5mg不等,优选每天每公斤体重约0.5至30mg。口服单位剂量可含有例如10到500mg的本发明化合物。另外,本发明化合物可通过非肠道途径或植入给药。
以下实施例用于说明本发明,而不应解释为以任何方式限定本发明。除非另外说明,本文所提及的所有“室温”都指约20℃到约23℃。第一步:4-硝基甾类化合物的制备实施例1(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮
将叔丁醇钾(1.70g,15mM)和(20S)-20-羟甲基孕甾-4-烯-3-酮(1.65g,5mM)在叔丁醇(25mL)中混合,然后在氩气氛中加热回流75分钟。然后将硝酸异丙酯(0.51mL,5mM)加到回流的反应混合物中,形成一个放热反应。一分钟后,将反应容器从热源移去并冷却至室温。然后加入乙酸(5mL)将冷却后的混合物酸化,搅拌过夜。然后用二氯甲烷稀释该混合物以形成足以增溶合成产物的分离相。随后滤除固体,并用二氯甲烷洗涤。将滤液及洗液中的物质合并并浓缩。将残留物再溶于二氯甲烷中,然后在硅胶上通过闪式色谱纯化得到(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。将此物质从丙酮水溶液中结晶而得到白色针状晶体(熔点:166-168℃)。IR3435,1696,1623(m),1633cm-1MS(CI)376(100%,M+1),358(30%,M+1-H2O)1H-NMR(CDCl3)δ0.73(3H,s,C18-Me),1.06(d,C20-Me),1.29(s,C19-Me),3.38(1H,dd,
),3.64(1H,dd,
CH2).分析:C22H33NO4·(0.2)H2O计算值:C,69.70;H,8.80;N,3.62;实测值:C,69.78;H,9.13;N,3.40。该化合物具有以下结构:实施例1A(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮
将叔丁醇钾(1.70g,15mM)和(20S)-20-羟甲基孕甾-4-烯-3-酮(1.65g,5mM)在叔丁醇中混合,在氩气氛中加热回流90分钟。然后将混合物冷却至室温并用固定量的硝酸异丙酯(0.51mL,5mM)处理。18小时后,用5mL乙酸将反应器中的物质酸化,随后用二氯甲烷稀释。滤除固体并进一步用另外的二氯甲烷洗涤。将滤液及洗涤残余物按照实施例1纯化而得结晶(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。实施例1B(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮
将叔丁醇钾(1.70g,15mM)和(20S)-20-羟甲基孕甾-4-烯-3-酮(1.65g,5mM)在叔丁醇(25mL)中混合,在氩气中于室温搅拌3小时。然后向该混合物中加入固定量的硝酸异丙酯(0.51mL,5mM),然后将混合物搅拌过夜。接着加入乙酸(5mL)。1小时后,滤除反应容器中残留的固体,用二氯甲烷洗涤。将合并的滤液及洗涤残余物按照实施例1纯化而得结晶(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。实施例1C(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮
将叔丁醇钾(7.6g,67.8mM)和(20S)-20-羟甲基孕甾-4-烯-3-酮(6.6g,20mM)在叔丁醇中混合,在氩气氛中加热回流60分钟。然后加入固定量的硝酸异丙酯(2.34ml,20mM)。进一步回流20分钟后,将反应容器冷却到室温。接着加入乙酸(10ML),将反应容器搅拌18小时,然后用二氯甲烷(200ML)稀释混合物。滤除固体,洗涤,重新与洗涤残余物混合,按照实施例1纯化而得结晶(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。实施例1D(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮
将叔丁醇钾(7.6g,67.8mM)和(20S)-20-羟甲基孕甾-4-烯-3-酮(6.6g,20mM)在叔丁醇中混合,在氩气氛中加热回流120分钟。然后加入固定量的己基硝酸2-乙酯(3.56mL,20mM)。10分钟后,将反应容器冷却至室温。加入乙酸(9mL)使反应骤冷并搅拌过夜。用二氯甲烷(200mL)稀释后,滤除固体,洗涤,与洗涤残余物混合,按照实施例1纯化而得结晶(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。实施例1E(20S)-20-羟甲基-4-硝基烷-4-烯-3-酮
将(20S)-羟甲基孕甾-4-烯-3-酮(6.18g,18.7mmol)的叔丁醇(91ml)溶液与叔丁醇钾(6.43g,57.3mmol,3摩尔当量)于回流温度反应1.5小时。在20分钟内滴加入硝酸异丙酯(2.9ml,1.6摩尔当量),然后将反应冷至室温并搅拌过夜(12-18小时)。然后用乙酸(6.2ml)处理反应混合物,室温搅拌1小时后倒入水中(400ml)。用二氯甲烷(4×100ml)萃取,将硫酸镁干燥后的有机相合并。过滤后,真空蒸发滤液得到红色油状物,通过硅胶塞过滤纯化(己烷∶乙醚∶二氯甲烷=4∶2∶1(2.5L),然后2∶2∶1(1L))。合并并浓缩适当级分,将所得物从沸腾异丙醇(向其中加入水直至浑浊)中重结晶即得标题化合物(2.66g)。实施例217β-羟基-4-硝基雄甾-4-烯-3-酮
按照实施例1的方法,将睾酮(2.88g,10mM)和叔丁醇钾(3.40g,30mM)和硝酸异丙酯(1.01ml)反应即得17β-羟基-4-硝基雄甾-4-烯-3-酮,熔点:158-160℃。(丙酮-己烷)IR 3533,1689,1615(m),1635cm-1MS(CI)334(100%,M+1),316(50%,M+1-H2O)1H-NMRδ(CDCl3)0.80(3H,s,C18-Me),1.30(s,C19-Me),3.66(1H,t,C17·H).该化合物具有以下结构:
用乙酸酐(3mL)和吡啶(6mL)处理上述合并的滤液及洗液。室温放置过夜后,用水搅拌反应1小时。滗去液体后即得粘性固体,色谱纯化后得到17β-乙酰氧基-4-硝基雄甾-4-烯-3-酮,熔点:216-217℃。(丙酮水溶液)IR(CHCl3)1725,1695,1623(m),1536,1256cm-1MS(CI)376(100%,M+1),316(35%,M+1-AcOH)1H-NMR(CDCl3)0.84(3H,s,C18-Me),1.30(s,C19-Me),2.05(s,COMe),5.62(1H,dd,C17-H).
正如前预计,17β-羟基-4-硝基甾类化合物可被修饰成相应的17-酮,例如下面的实施例。实施例2A 4-硝基雄甾-4-烯-3,17-二酮
将冷至-6℃的17β-羟基-4-硝基雄甾-4-烯-3-酮(4-硝基睾酮,10.56g,31.7mM)的丙酮(900ml)溶液用琼斯试剂(10.0ml)处理。用甲醇分解过量的试剂后,滤除固体。浓缩滤液(例如用真空旋转蒸发仪),然后通过硅胶闪式色谱法纯化得到4-硝基雄甾-4-烯-3,17-二酮,熔点:205-205.5℃。分解(丙酮-己烷)。
IR1738,1622,1533,1373cm-1
MS(CI)332(100%,M+1)
按照实施例1的方法,将17β-羟基-7α-甲基睾酮(11.2g,37.0mM)、叔丁醇钾(8.29g,73.9mM)和硝酸异丙酯(3.76ml)反应得到17β-羟基-7α-甲基-4-硝基雄甾-4-烯-3-酮,熔点:229-230℃(分解)。(丙酮-己烷)IR(CHCl3)3614,1694,1658(m),1623,1536cm-1MS(CI)348(100%,M+1),330(40%,M+1-H2O)1H-NMR(CDCl3)0.89(d,C7-Me),0.91(s,C18-Me),1.16(s,C19-Me),3.68(t,C17-H).该化合物具有以下结构:
通过下述实施例可将17β-羟基甾类化合物转化成相应的17-酮。实施例3A7α-甲基-4-硝基雄甾-4-烯-3,17-二酮
将17β-羟基-7α-甲基-4-硝基雄甾-4-烯-3-酮(4.2g,12.1mM)的丙酮(400ml)溶液冷却至0℃并用琼斯试剂(4.0ml)处理。加入甲醇分解过量的试剂。滤除固体,浓缩滤液得绿色固体。经硅胶闪式色谱纯化得到7α-甲基-4-硝基雄甾-4-烯-3,17-二酮(丙酮水溶液)。IR(CHCl3)1735,1697,1625(m),1537cm-1MS(CI)346(100%,M+1),328(50%,M+1-H2O)1H-NMR(CDCl3)0.86(3H,d,C7-H),0.93(3H,s,C18-Me),1.33(s,C19-Me).该化合物具有以下结构:实施例411α,17β-二羟基-17α-甲基-4-硝基雄甾-4-烯-3-酮
按照实施例1的方法,将11α,17β-二羟基-17-甲基雄甾-4-烯-3-酮(6.37g,20.0mM)、叔丁醇钾(6.73g,60.0mM)和硝酸异丙酯(2.02ml)反应得到11α,17β-二羟基-17α-甲基-4-硝基雄甾-4-烯-3-酮的泡沫状固体。IR3435,1691,1618(m),1533,1373cm-1MS(CI)364(100%,M+1),346(30%,M+1-H2O),328(37%,M+1-2H2O)1H-NMR(CDCl3)0.93(3H,s,C18-Me),1.21(s,C19-Me),1.43(s,C17-Me),4.08(1H,dt,C11-H).
按照实施例1的方法,将20,21-二羟基孕甾-4-烯-3-酮-21-乙酸酯(6.73g,18.0mM)、叔丁醇钾(5.78g,51.5mM)和硝酸异丙酯(1.60ml)反应得到20,21-二羟基-4-硝基孕甾-4-烯-3-酮。从丙酮水溶液中重结晶得到相应的丙酮化合物,熔点:221-223℃(分解)。IR 1693,1622(m),1535,1371m-1MS(CI)418(55%,M+1),101(100%)1H-NMR(CDCl3)0.90(3H,s,C18·Me),1.03(s,C19-Me),1.33(s,Me),1.37(s,Me),3.46-3.54(1H,m,C20-H),3.93-4.05(2H,m,C21-CH2).
通过下述实施例的方法可将丙酮基从20,21双氧碳上脱去。实施例5A20,21-二羟基-4-硝基孕甾-4-烯-3-酮
将从实施例5滤液重结晶后得到的20,21-二羟基-4-硝基孕甾-4-烯-3-酮丙酮化合物的甲醇溶液微热助其形成溶液。然后将反应容器冷却至室温后加入5%盐酸水溶液(10mL)。搅拌4小时后用碳酸钾水溶液中和反应并在真空中浓缩。将残留物分配在稀盐酸水溶液和二氯甲烷中。然后分离有机层,用硫酸镁干燥并浓缩得黄色泡沫状物,将其在硅胶上通过闪式色谱纯化得到20,21-二羟基-4-硝基孕甾-4-烯-3-酮,熔点:183℃-185℃(甲醇水溶液)。IR(CHCl3)3628,3587,1693,1622,1535,1373cm-1MS(CI)378(100%,M+1),342(35%,M+1-2H2O)1H-NMR0.92(3H,s,C18-Me),1.30(3H,s,C19-Me),3.34-3.44(1H,m,C20-H),3.61-3.72(2H,m,C21-CH2).化合物具有以下结构:实施例617β-环丙氧基-4-硝基雄甾-4-烯-3-酮
按照实施例1的方法将17β-环丙氧雄甾-4-烯-3-酮(9.70g,29.5mM)、叔丁醇钾(7.0g,62.4mM)和硝酸异丙酯(2.99ml)反应而得17β-环丙氧基-4-硝基雄甾-4-烯-3-酮,熔点:137℃-138℃(甲醇)。IR(CHCl3),1695,1622(m),1535,1373cm-1MS(CI)374(100%,M+10,316(20%,M+1-c-C3H5-O)1H-NMR(CDCl3)0.38-0.61(4H,m),0.80(3H,s,C18-Me),1.29(s,C19-Me),3.25-3.33(1H,m,cyclopropyl-CHO),3.44(1H,t,C17-H).
上述硝化的起始物可如下制备:
将17β-环丙氧雄甾-5-烯-3β-醇(19.36G,58.9mM)的丙酮(1.9L)溶液冷却至-3℃,用琼斯试剂(20ml)处理。用甲醇分解过量试剂。滤除固体。将滤液浓缩得到绿色油状物,在硅胶上通过闪式色谱纯化得到17β-环丙氧雄甾-4-烯-3-酮(11.0g,57%)。
上述氧化的起始物(17β-环丙氧雄甾-5-烯-3β-醇)可按照Angelastro和Blohm的美国专利4,966,897所述方法制备。实施例6A17β-(环丙氧基)-4-硝基雄甾-4-烯-3-酮
室温与氮气氛下,经10分钟将叔丁醇钾(109g,0.97mol,2.1摩尔当量)加到搅拌下的17β-(环丙氧基)-雄甾-4-烯-3-酮的叔丁醇(2L)溶液中。连续在室温下搅拌18小时,接着于室温下经30分钟加入硝酸异丙酯(48.2g,0.46mol,1.0摩尔当量)的叔丁醇(50mL)溶液。室温下连续再搅拌一天后,经25分钟加入冰醋酸(130mL),再连续搅拌18小时。随后加入二氯甲烷(1.5L)和盐水(饱和NaCl,800mL),再搅拌溶液10分钟。然后分离有机相,用硫酸镁干燥。过量洗涤反应浆,浓缩滤液(35℃/40毫米汞柱)而得深红色油状物。通过闪式色谱纯化(SiO2,洗脱液∶乙酸乙酯/己烷5∶95,乙酸乙酯/己烷1∶9和乙酸乙酯/己烷15∶85)。合并并浓缩含有所需产物的级分(30℃/40毫米汞柱),得到固体残留物,将其在己烷(350mL)中搅拌。过滤并干燥该固体得到黄色固状标题化合物(68g,40%)。将该滤液浓缩并重新进行如上色谱即得到另一部分化合物(8g,5%)。熔点:133-134℃。IR(KBr)3437,3090,2945,2870,1693,1624,1531,1450,1373,1346,1332,1211,1188,1170,1076,1062,1035,1012,962,794,765cm-1.1H-NMR(CDCl3)δ0.50(4H,m,2x cyclopropyl-CH2),0.80(3H,s,C18-Me),1.30(3H,s,C19-Me),3.3(3H,m,OCH ofcyclopropyl),3.44(1H,t,C17-H).MS(CI,CH4)m/z(rel.intensity)374(100%,M+1).分析C22H31NO4的计算值:C,70.75;H,8.37;N,3.75;实测值:C,70.99;H,8.44;N,3.56。实施例74-硝基-雄甾-4-烯-3-酮-17β-羧酸
按照实施例1的方法将雄甾-4-烯-3-酮-17β-羧酸(3.63g,11.4mM)、叔丁醇钾(4g,35.3mmol)和硝酸异丙酯(1.9mL)反应生成4-硝基-21-雄甾-4-烯-3-酮-17β-羧酸,熔点:205-208℃(分解)。IR(CHCl3)3034,2970,1697,1535,1373cm-1MS(CI)362(100%,M+1)1H-NMRδ(CDCl3)0.79(3H,s,C18·Me),1.3(3H,s,C19·Me).
将叔丁醇钾(8.5g,75mmol)和叔丁醇(75mL)加到装备有磁性搅棒和气体入口的250mL圆底烧瓶中。加入雄甾-4-烯-3-酮-17β-甲酰胺(9.3g,25mmol),将该溶液在65℃于氩气氛中搅拌20分钟。加入硝酸异丙酯(2.8mL,28mmol)使形成剧烈放热反应,经1小时将该溶液冷却至25℃。加入乙酸(7.5mL),滤除沉淀并浓缩滤液。将所得黑色胶溶于二氯甲烷,用水洗涤,浓缩并在300mL硅胶上进行色谱,用30-50%乙酸乙酯/己烷洗脱,从二氯甲烷/己烷中得到441mg晶状产物。熔点:207-208.5℃(分解);IR(KBr):3441,2967,2943,2916,2885,2847,1693,1670,1624,1535,1508,1475,1452,1390,1367cm-1.Uv(EtOH)λmax=242nM;ε=13,100;1H-NMR(CDCl3):δ4.40(s,1H),2.52-2.60(m,2H),1.4-2.46(m,16H),1.35(s,9H),1.31(s,3H),1.03-1.32(m,4H),0.74(s,3H)ppm;分析C24H36N2O4计算值:C:69.20%;H:8.71%,N:6.72%;实测值:C:69.33%,H:8.63%,N:6.60%。该化合物结构如下:实施例9A20-乙酰硫甲基-4-硝基孕甾-4-烯-3-酮
在吡啶(2ml)中制备20-羟甲基-4-硝基孕甾-4-烯-3-酮(750mg,2.0mmol)(实施例1制备)和甲苯磺酰氯(400mg,2.1mmol),在25℃搅拌12小时。24小时后,将残留物再溶于二氯甲烷(2mL)中,加入另外的甲苯磺酰氯(40mg)。再搅拌12小时后,加入2滴水,将该混合物搅拌30分钟,用二氯甲烷(50ml)、水(50ml)、10%HCl(50ml)洗涤,以MgSO4干燥。浓缩该物质,从50∶50乙酸乙酯/己烷(1∶1)的溶液结晶得到黄色固体。熔点:181℃-182℃。
将如上制备的甲苯磺酰盐(529mg)溶于无水二甲基甲酰胺(10ml),加入通过将Cs2CO3(163mg,0.5mmol)和HSCOCH3(86mg,1.1mM)溶于甲醇(3mL)并蒸发而新制得的CsSCOCH3。24小时后,用乙醚小时反应,用水洗涤,浓缩并用二氯甲烷/己烷(4∶1)进行闪式色谱。浓缩含有所需产物的级分并从己烷中结晶而得到225mg硫酯。
另外,替换由上述方法制得的甲苯磺酰盐按照下述步骤制备相应的硫代乙酰化物:将Cs2CO3(163mg,0.5mmol)溶于甲醇(2ml)和HSCOCH3(90mg,1.1mmol)。真空浓缩均相溶液。将残留物溶于二甲基甲酰胺(3ml)和甲苯磺酰盐(529mg,1.0mM)。将所得溶液在25℃氮气下搅拌18小时。将如上制备的硫代乙酸铯(1.0mmol)的另一溶液(1.0ml二甲基甲酰胺)加到反应容器中。转化完成后(TLC确定),加入1N HCl(1ml),将所得溶液溶于乙酸乙酯,水洗,硫酸镁干燥。
将实施例9A制备的硫代乙酰化物(65mg,0.15mM)溶于2ml甲醇和含0.3ml 1N LiOH的1mlTHF中。搅拌1小时后,加入0.1ml乙酸。用乙酸乙酯提取该溶液,水洗,硫酸镁干燥。将产物溶于1.0ml乙酸中,加热至约50℃,真空浓缩而得淡黄色固体(30mg)。
将17β-环丙胺基-4-烯-3-酮(4.61g,14.07mmol)和叔丁醇钾(4.74g,42.22mmol,3摩尔当量)的叔丁醇溶液(60ml)加热回流1小时。当溶液开始回流时即加入硝酸异丙酯(1.43ml,14.07mM,1摩尔当量)。将反应慢慢冷至室温,然后向反应混合物中加入冰醋酸(20ml)和二氯甲烷(20ml)以溶解橘红色沉淀物。将反应于室温放置过夜。过滤反应混合物,用二氯甲烷洗涤滤饼至白色。将滤液用另外200ml二氯甲烷稀释,随后用半饱和的氯化钠水溶液(200ml)洗涤,然后用含等量半饱和氯化钠水溶液和饱和碳酸氢钠水溶液的200ml溶液洗涤。有机层用硫酸镁干燥,真空浓缩,在硅胶上通过色谱纯化(二氯甲烷/甲醇,19∶1)而得到17β-环丙胺基-4-硝基雄甾-4-烯-3-酮的黄色泡沫状固体。1H-NMR(300MHz,CDCl3)δ0.75(s,3H,C19-Me);1.30(s,3H,C18-Me)ppm.IR(KBr)3435,2944,2870,1695,1533,1371,1013,766cm-1.MS(EI)=372(M+).该化合物结构如下:第二步:将甾体4-硝基-Δ4-3-酮还原为4-氨基-Δ4-3-酮甾类化合物A.催化还原实施例114-氨基-20-羟甲基孕甾-4-烯-3-酮
将20-羟甲基-4-硝基孕甾-4-烯-3-酮(2.01g,5.35mM)的无水乙醇(28ml)溶液相继用Lindlar催化剂(吸附5%钯和5.2%铂的碳酸钙,0.81g)和喹啉(37μl)处理,在氢气中于40-55p.s.i.保持24小时。然后用硅藻土过滤混合物,滤液浓缩为黄色固体,用短径(short path)色谱法纯化而得4-氨基-20-羟甲基孕甾-4-烯-3-酮,熔点180-185℃(异丙醇水溶液)。IR3512,3470,3384,1648,1614,1576cm-1MS(CI)346(100%,M+1),328(30%,M+1-H2O).1H-NMR0.72(3H,s,C8-Me),1.02(d,C21-Me),1.15(s,C19-Me),2.6-3.2(v.br,NH2),3.36(1H,dd,0.5·C22-CH2),3.63(1H,dd,0.5·C22-CH2).
将17β-环丙氧基-4-硝基雄甾-4-烯-3-酮(4.36g,11.6mM)的无水乙醇(125ML)溶液相继用Ljndlar催化剂和喹啉(80mL)处理。在一个大气压下于氢气中将混合物搅拌117小时。反应混合物用顶端加有活性炭的硅藻土过滤,用无水乙醇洗涤。浓缩合并的滤液和洗液而得棕色液体(3.7g),溶解于二氯甲烷中,装于用己烷/乙酸乙酯(1∶4)制备的硅胶柱顶端,闪式色谱纯化,用己烷/乙酸乙酯(1∶4)洗脱。
合并含产物的级分,浓缩得到淡黄色玻璃状物质(2.3g),放置结晶。将晶体溶于甲醇,用棉花过滤,滴加入水直至开始结晶。将混合物置于冰箱过夜(12-18小时)。过滤收集晶体,用冷甲醇水溶液和水洗涤,然后真空干燥得到4-氨基-17β-(环丙氧基)-雄甾-4-烯-3-酮的淡黄色固体(1.97g)。IR(KBr)ν3458,3372,1674,1622(m),1585cm-1.Anal.calc′d for C22H33NO2:C:76.92;H:9.68;N:4.08.Found:C:76.86;H:10.04;N:4.08.1H-NMR(CDCl3)δ0.38-0.61(4H,m,2x CH2),0.79(3H,s,C18-Me),1.15(s,C19-Me),3.27+3.44+ca.3.4(4H,cycloproxy-H,C17-H,NH2,m+t,v.br.).UV(EtOH)λ294(ε7570,1g.ε3.879)MS/CI 344(100%,M+1),286(30%,M+1-C3H5OH).The compound实施例12A
4-氨基-17β-(环丙氧基)-雄甾-4-烯-3-酮盐酸盐
在35℃于氮气下,向17β-(环丙氧基)-4-硝基-雄甾-4-烯-3-酮(10g,26.7mmol)的甲醇溶液(200ml)中加入Lindlar催化剂(4g,5.9%Pd+5.4%Pb/CCP3(CaCO3),D.R.Engelhard,Seneca,SC)和喹啉(0.2g,1.6mmol)。将所得混合物置于Parr振荡器中,室温下于氢气中在50psi振摇20小时,期间约消耗3摩尔当量的氢气。滤除催化剂。
将上述步骤重复大约9次(8×10g和1×7g),合并过滤后的产物溶液。在该溶液中加入二氧化硅(550g),将混合物于10-15℃减压(10mmHg)浓缩。将二氧化硅和产物的混合物上闪式色谱柱(直径20cm,含5kg二氧化硅),相继用15%(20L),20%(20L)和30%(40L)乙酸乙酯的己烷溶液洗脱柱子。合并含产物的级分,在10℃、30mmHg下浓缩而得黄色溶液(600ml)。在4℃将该溶液用1.8M HCl的乙酸乙酯溶液(75ml)处理。所得反应浆用丙酮(200ml)和二氯甲烷(100ml)稀释。搅拌30分钟后,过滤收集固体,用丙酮(300ml)洗涤,干燥得到标题化合物(34g,37%);熔点206-207℃。将滤液浓缩至300ml,收集固体得到第二批化合物(3.4g,4%);熔点203-204℃。
IR(KBr)3445,3086,2945,2872,2555,1967,1791,1682,
1641cm-1.
1H-NMR(CDCl3)δ0.50(4H,m,2x cyclopropyl-CH2),0.76(3H,
s,C18-Me),1.21(3H,s,C19-CH3),3.2(1H,m,OCH of
cyclopropyl),3.39(1H,t,C17-H),9.6(3H,br.s,NH3).
MS(CI)m/z344(100%,M+).分析C22H34NO2Cl·(0.6)H2O计算值:C:68.05;H:9.07,N:3.61;实测值:C:68.18,H:9.06,N:3.52。实施例1317β-环丙氨基-4-氨基孕甾-4-烯-3-酮
将17β-环丙氨基-4-硝基孕甾-4-烯-3-酮(670mg,1.80mmol)溶于无水乙醇(11ml),用Lindlar催化剂(268mg)和喹啉(3ul)处理。在大气压下(约760mm/mg)于氢气中剧烈搅拌溶液18小时。过滤反应混合物,用乙醇(100ml)和二氯甲烷(100ml)洗涤。真空中除去溶剂,产物在硅胶上用色谱纯化(二氯甲烷/甲醇,47∶3)而得黄色油状物,结晶即得黄色固体。熔点:149-150℃(乙醚)IR(KBr):3474,3366,2945,1616,1577cm-1(MS(Cl/CH4)[M++H)=3431H-NMR(33MHz,CDCl3)δ0.73(3H,s,C18-Me),1.15(3H,s,C19-Me),2.66(1H,t,C17-H)13C-NMR(75MHz,CDCl3)δ6.464,7.185,11.289,20.803,23.682,24.757,29.683,29.753,30.914,32.860,34.899,35.307,37.904,42.453,52.910,54.549,69.014,132.938,138.860,194.343.B.化学还原实施例144-氨基-20-羟甲基孕甾-4-烯-3-酮
在20-羟甲基-4-硝基孕甾-4-烯-3-酮(0.52g,1.38ml)的无水乙醇(4.8ml)溶液中一次加入二氯化锡(2.1g),然后加热至70℃反应6小时。将反应容器冷却至室温,将该溶液用碳酸氢钠(9g)小心中和10分钟。然后过滤所得反应浆,将滤出的棕色固体在氢氟酸(25ml)和乙酸乙酯(25ml)中搅拌。重复氢氟酸和乙酸乙酯的处理过程。合并滤出的有机相,硫酸镁干燥,过滤并浓缩。将所得残余物通过闪式色谱法纯化而得4-氨基-20-羟甲基孕甾-4-烯-3-酮的白色固体,其与美国专利5,218,110(Weintraub)和美国专利5,120,840(Weintraub等)所描述的化合物一致,这些专利在此作为参考。该化合物结构如下:实施例144-氨基-17-环丙氧基雄甾-4-烯-3-酮
用锌粉(1.0g)处理17-环丙氧基-4-硝基雄甾-4-烯-3-酮(1.0g,2.71mM)的乙酸溶液(10ml)。室温下剧烈搅拌混合物1.5小时。滤除锌盐并用乙酸乙酯洗涤。合并滤液和洗液,浓缩得到黄色固体,将其再溶于乙酸乙酯并用1M盐酸(150ml)提取3次。合并的酸提取液用氢氧化钠(pH14)中和,再用乙醚提取。用硫酸钠干燥合并的有机层,浓缩得到4-氨基-17-环丙氧基雄甾-4-烯-3-酮(0.59g),熔点100-102℃(甲醇水溶液)。IR3354,1662,1620,1581cm-1MS(CI)344(100%,M+1)1H-NMR0.37-0.61(4H,m,2x cyclopropyl CH2),0.79(3H,s,C18-Me),1.16(s,C19-Me),3.25-3.33(m,cyclopropyl-CHO),3.44(t,C17-H).该化合物结构如下:实施例1620-乙酰硫甲基-4-氨基孕甾-4-烯-3-酮
将20-乙酰硫甲基-4-硝基孕甾-4-烯-3-酮(173mg,0.40mmol)和300mg锌粉于2ml冰醋酸中搅拌30分钟。将混合物倒入乙酸乙酯(50ml)中,用3×50ml饱和碳酸氢钠水溶液洗涤,硫酸镁干燥。熔点173-176℃。
Claims (29)
1.制备下列通式化合物的方法其中R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,乙酰硫代链烷基,环丙氨基,叔丁基甲酰胺,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C-4烷烃硫醇;R1是氢,羟基或C1-6烷基;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R7是氢或C1-C8烷基;R8是C1-C8烷基;环上的符号
表示该键是单键或双键;其中R和R1一起以及/或者R5和R6一起可代表=O;前提是当R是OH时,R1是氢;以及当R5是OH时,R6是氢;该方法依次包括:a)将下列通式起始化合物:其中R-R8和
同以上定义,在升高或适当温度下与有效量强碱反应足够时间而生成相应的热力学3,5-二烯醇酯,然后加入中性的硝化试剂生成4-硝基甾类化合物;然后b)将4-硝基甾类化合物与适当还原剂反应。
2.权利要求1的方法,其中的化合物为(17S)-环丙氧基雄甾-4-烯-3-酮。
3.权利要求1的方法,其中的化合物为(20S)-4-氨基-21-羟基-20-甲基孕甾-4-烯-3-酮。
4.权利要求1的方法,其中强碱选自叔丁醇钾和叔戊酸钾(potassiumtert-amylate)。
5.权利要求4的方法,其中有效量的强碱约在2-4摩尔当量之间。
6.权利要求5的方法,其中有数量的强碱约为2摩尔当量。
7.权利要求1的方法,其中升高的温度约在17℃与100℃之间。
8.权利要求7的方法,其中升高的温度约在50℃与83℃之间。
9.权利要求8的方法,其中升高的温度约为83℃。
10.权利要求1的方法,其中足以生成热力学二烯醇酯的时间约为5分钟到8小时之间。
11.权利要求10的方法,其中足以生成热力学二烯醇酯的时间约为15分钟到180分钟之间。
12.权利要求11的方法,其中足以生成热力学二烯醇酯的时间约为60分钟。
13.权利要求1的方法,其中的中性硝化剂是含3到8个碳原子的饱直链或支链硝酸烷基酯。
14.权利要求13的方法,其中的硝酸烷基酯选自硝酸异丙酯、硝酸异丁酯和己基硝酸2-乙酯。
15.权利要求14的方法,其中适当的还原剂选自化学试剂如乙酸中的金属锌,或乙酸中的金属锌;催化剂如Lindlar催化剂。其中R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,环丙氨基,乙酰硫代链烷基,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇;R1是氢,羟基或C1-6烷基;R和R1一起表示=O,即一个氧原子以双键连接在17位碳上;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R5和R6可一起表示=O,即一个氧原子以双键连接在11位碳上;R7是氢或C1-C8烷基;R8是C1-C8烷基;前提是当R是OH时,R1是氢;以及当R5是OH时,R6是氢。
16.权利要求15的化合物为(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。
17.权利要求15的化合物为17β-环丙氧基-4-硝基雄甾-4-烯-3-酮。
18.抑制甾美化合物5α-还原酶的方法,包括给予有效抑制量的下列通式化合物:其中R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,乙酰硫代链烷基,环丙氨基,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇;R1是氢,羟基或C1-6烷基;R和R1一起表示=O,即一个氧原子以双键连接在17位碳上;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R5和R6可一起表示=O,即一个氧原子以双键连接在11位碳上;R7是氢或C1-C8烷基;R8是C1-C8烷基;前提是当R是OH时,R1是氢;以及当R5是OH时,R6是氢。
19.权利要求18的方法,其中给予的化合物是20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。
20.抑制甾类化合物C17-20裂解酶的方法,包括给予有效抑制量的下列通式化合物:其中R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,环丙氨基,乙酰硫代链烷基,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇;R1是氢,羟基或C1-6烷基;R和R1一起表示=O,即一个氧原子以双键连接在17位碳上;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R5和R6可一起表示=O,即一个氧原子以双键连接在11位碳上;R7是氢或C1-C8烷基;R8是C1-C8烷基;前提是当R是OH时,R1是氢;以及当R5是OH时,R6是氢。
21.权利要求20的方法,其中给予的化合物是17β-环丙氧基-4-硝基雄甾-4-烯-3-酮。
22.权利要求20的方法,其中给予的化合物是(20S)-20-羟甲基-4-硝基孕甾-4-烯-3-酮。
23.权利要求20的方法,其中给予的化合物是(20S)-20-硫甲基-4-硝基孕甾-4-烯-3-酮。
24.一种制备如下通式化合物的方法:其中R是OH,C1-C6链烷酰基,C1-C6链烷酰氧基,C1-C4链烷醇,COCH2OH,CO2H,CONR7R8,环丙氧基,乙酰硫代链烷基,环丙氨基,叔丁基甲酰胺,2,2-二甲基二氧戊环-4-基,1,2-二羟基乙基和C1-4烷烃硫醇;R1是氢,羟基或C1-6烷基;R2,R3和R4是彼此独立的氢或C1-6烷基;R5和R6是彼此独立的氢或OH;R7是氢或C1-C8烷基;R8是C1-C8烷基;环上的符号表示该键是单键或双键;其中R和R1一起以及/或者R5和R6一起可代表=O;前提是当R是OH时,R1是氢或C1-4烷基;以及当R5是OH时,R6是氢并且当R6是OH时,R5是氢;该方法依次包括:其中R-R8和同以上定义,在适当温度下与有效量强碱反应足够时间而生成相应的热力学3,5-二烯醇酯,然后加入中性的硝化试剂生成4-硝基甾类化合物;然后b)将4-硝基甾类化合物与适当还原剂反应;以及c)选择性转化为可药用盐。
25.权利要求24的方法,其中的化合物为(17S)-4-氨基-环丙氧基-雄甾-4-烯-3-酮。
26.权利要求24的方法,其中的化合物为(20S)-4-氨基-21-羟基-20-甲基孕甾-4-烯-3-酮。
27.权利要求24的方法,其中的化合物为4-氨基-21-羟基-20-甲基孕甾-4-烯-3-酮盐酸盐。
28.权利要求24的方法,其中适当的温度在约17℃至约30℃之间。
29.权利要求24的方法,其中适当的温度在约20℃至25℃之间。
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US5965550A (en) | 1999-10-12 |
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HU9603035D0 (en) | 1997-01-28 |
CN1042540C (zh) | 1999-03-17 |
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DE69507139D1 (de) | 1999-02-18 |
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