外观为白色结晶或无定形粉末。它首先是由美国化学家Wall等人于1967年从短叶红豆杉中分离得到的。它能够与微管蛋白结合,促进微管蛋白聚合装配成微管二聚体,从而抑制细胞微管解聚,阻止细胞快速繁殖。临床试验表明,紫杉醇用于治疗转移性卵巢癌及乳腺癌有显著疗效,另外用于治疗小细胞和非小细胞肺癌、宫颈癌、抗化疗白血病等也有一定疗效。紫杉醇只存在于红豆杉属植物中,本属共11种,我国有4种及1个变种,它们分别是云南红豆杉、西藏红豆杉(又名喜马拉雅红豆杉)、中国红豆杉、南方红豆杉(又名美丽红豆杉)。这些植物中除含紫杉醇外,还含有多种其他紫杉烷类二萜。
紫杉醇的制造方法有三种。第一种是合成法,第二种是细菌培养法,第三种是从红豆杉中直接分离制取。前两种方法虽已取得重大研究成果,但均未实现产业化,目前从天然或栽培的红豆杉中分离仍是生产紫杉醇的主要途径。其分离过程一般是甲醇或乙醇浸出(或超离界提取)一己烷脱酯一二氯甲烷或氯仿萃取得粗提物一多次硅胶柱层析一制备性HPLC、TLC、HSCCC纯化一重结晶得产品。由于硅胶柱层析很难将紫杉醇与另一衍生物Cephal omanmne分开且产品收率低,Kingston等人采用03选择性氧化Cepha-lomannine分子中的烯键,然后再经硅胶柱层析将紫杉醇纯化。近年来,采用高分子树脂进行红豆杉粗提物的脱色及分离取得很大进度,克服了原各种分离方法收率低、产量小、成本高、生长周期长等问题。
可用于治疗转移性卵巢癌及乳腺癌;也用于治疗小细胞和非细胞肺癌、宫颈癌、抗化疗白血病等。
中文名 | 紫杉醇 |
英文名 | Paclitaxel |
别名 | 泰素 特素 紫彬醇 紫杉醇 合成紫杉醇 红豆杉提取物 TAXOL紫杉醇 PACLITAXEL 紫杉醇 浆果赤霉素III,,泰素,紫素,特素 |
英文别名 | taxal taxol a PACLITAXEL Paclitaxel PACLITAXOL Paclitaxelx Paclitaxel HCL PACLITAXEL, TAXUS SPECIES Paclitaxel(natural crude) PACLITAXEL, TAXUS BREVIFOLIA N-BENZYL-BETA-PHENYLISOSERINE ESTER 7,11-methano-5h-cyclodeca[3,4]benz[1,2-b]oxete benzenepropanoic acid deriv. |
CAS | 33069-62-4 |
EINECS | 608-826-9 |
化学式 | C47H51NO14 |
分子量 | 853.92 |
InChI | InChI=1/C47H51NO14/c1-25-31(60-43(56)36(52)35(28-16-10-7-11-17-28)48-41(54)29-18-12-8-13-19-29)23-47(57)40(61-42(55)30-20-14-9-15-21-30)38-45(6,32(51)22-33-46(38,24-58-33)62-27(3)50)39(53)37(59-26(2)49)34(25)44(47,4)5/h7-21,31-33,35-38,40,51-52,57H,22-24H2,1-6H3,(H,48,54)/t31?,32-,33+,35?,36?,37+,38?,40?,45+,46-,47+/m0/s1 |
InChIKey | RCINICONZNJXQF-MZXODVADSA-N |
密度 | 0.200 |
熔点 | 213°C (dec.)(lit.) |
沸点 | 774.66°C (rough estimate) |
比旋光度 | D20 -49° (methanol) |
闪点 | 9℃ |
水溶性 | 0.3mg/L(37 ºC) |
蒸汽压 | 0mmHg at 25°C |
溶解度 | 甲醇: 50毫克/毫升,澄清,无色 |
折射率 | -49 ° (C=1, MeOH) |
酸度系数 | 11.90±0.20(Predicted) |
存储条件 | 2-8°C |
稳定性 | 稳定。与强氧化剂不相容。可燃。 |
外观 | 粉末 |
颜色 | white |
最大波长(λmax) | 227nm(MeOH)(lit.) |
Merck | 14,6982 |
BRN | 1420457 |
物化性质 | 从甲醇析出针状结晶或无定形粉末。熔点213~216℃(分解)。[α]D20-49°(甲醇)。UV最大吸收(甲醇):227,273nm(ε29800,1700)。 |
MDL号 | MFCD00869953 |
危险品标志 | Xn - 有害物品 |
风险术语 | R37/38 - 刺激呼吸系统和皮肤+B52。 R41 - 对眼睛有严重伤害。 R42/43 - 吸入及皮肤接触可能致敏。 R62 - 有损害生育能力的危险。 R68 - 可能有不可逆后果的危险。 R40 - 少数报道有致癌后果。 R48 - 长期接触严重危害健康。 R20/21/22 - 吸入、皮肤接触及吞食有害。 R68/20/21/22 - |
安全术语 | S22 - 切勿吸入粉尘。 S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 S36/37/39 - 穿戴适当的防护服、手套和护目镜或面具。 S45 - 若发生事故或感不适,立即就医(可能的话,出示其标签)。 |
危险品运输编号 | 1544 |
WGK Germany | 3 |
RTECS | DA8340700 |
FLUKA BRAND F CODES | 10-21 |
海关编号 | 29329990 |
Hazard Class | 6.1(b) |
Packing Group | III |
上游原料 | 硅胶 硅藻土 色谱柱 三乙胺三氢氟酸盐 叔丁基异氰酸酯 碳酸氢钠 三乙胺 三甲基氯硅烷 叔丁醇钾 氢氟酸 |
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紫杉醇是从天然植物红豆杉属树皮中提取的单体双萜类化合物,是一种复杂的次生代谢产物, 也是目前所了解的惟一一种可以促进微管聚合和稳定已聚合微管的药物。同位素示踪表明, 紫杉醇只结合到聚合的微管上, 不与未聚合的微管蛋白二聚体反应。细胞接触紫杉醇后会在细胞内积累大量的微管,这些微管的积累干扰了细胞的各种功能,特别是使细胞分裂停止于有丝分裂期,阻断了细胞的正常分裂。 通过Ⅱ-Ⅲ临床研究,紫杉醇主要适用于卵巢癌和乳腺癌,对肺癌、大肠癌、黑色素瘤、头颈部癌、淋巴瘤、脑瘤也都有一定疗效。
治疗卵巢癌和铂类等已有抗药性的顽固性卵巢癌、乳腺癌有良好效果,对治疗前列腺癌、、头颈部癌、食管癌、生殖细胞肿瘤、子宫内膜癌、淋巴瘤、膀胱癌、上消化道癌、小细胞性和非小细胞性肺癌前景良好。
外观为白色结晶或无定形粉末。它首先是由美国化学家Wall等人于1967年从短叶红豆杉中分离得到的。它能够与微管蛋白结合,促进微管蛋白聚合装配成微管二聚体,从而抑制细胞微管解聚,阻止细胞快速繁殖。临床试验表明,紫杉醇用于治疗转移性卵巢癌及乳腺癌有显著疗效,另外用于治疗小细胞和非小细胞肺癌、宫颈癌、抗化疗白血病等也有一定疗效。紫杉醇只存在于红豆杉属植物中,本属共11种,我国有4种及1个变种,它们分别是云南红豆杉、西藏红豆杉(又名喜马拉雅红豆杉)、中国红豆杉、南方红豆杉(又名美丽红豆杉)。这些植物中除含紫杉醇外,还含有多种其他紫杉烷类二萜。
紫杉醇的制造方法有三种。第一种是合成法,第二种是细菌培养法,第三种是从红豆杉中直接分离制取。前两种方法虽已取得重大研究成果,但均未实现产业化,目前从天然或栽培的红豆杉中分离仍是生产紫杉醇的主要途径。其分离过程一般是甲醇或乙醇浸出(或超离界提取)一己烷脱酯一二氯甲烷或氯仿萃取得粗提物一多次硅胶柱层析一制备性HPLC、TLC、HSCCC纯化一重结晶得产品。由于硅胶柱层析很难将紫杉醇与另一衍生物Cephal omanmne分开且产品收率低,Kingston等人采用03选择性氧化Cepha-lomannine分子中的烯键,然后再经硅胶柱层析将紫杉醇纯化。近年来,采用高分子树脂进行红豆杉粗提物的脱色及分离取得很大进度,克服了原各种分离方法收率低、产量小、成本高、生长周期长等问题。
可用于治疗转移性卵巢癌及乳腺癌;也用于治疗小细胞和非细胞肺癌、宫颈癌、抗化疗白血病等。
多西紫杉醇是从紫杉树中提取出来的一种非常强的骨髓活性抑制剂类药物,在治疗期间须监测血细胞和血小板计数。药物作用机制与紫杉醇相似,即抑制微管的解聚,抑制细胞分裂。通过静脉输液给药治疗晚期或转移期的乳腺癌和非小细胞性肺癌。
江苏红豆集团已于三四年前投资数千万元在华东地区建起了最大的红豆杉速生林基地,总面积达7400亩,现人工栽培的红豆杉树苗早已郁郁成林,并得到联合国有关部门的好评和国内林业部领导的高度赞扬。预计今年红豆集团将开工生产紫杉醇原料药和注射剂,设计年产600万支紫杉醇注射剂,该项目已通过国家药检局和省、市药监局的验收。
另外,我国东北林区以及云贵两省一些山区也在大力发展红豆杉速生林栽培技术,在今后3~5年内,这些地方的有望形成新的红豆杉林区,从而为国内提供宝贵的紫杉醇原料药新来源。湖南、湖北等南方山区省也在建设红豆杉栽培基地,作为帮助当地农民脱贫致富的措施之一。按这一发展趋势,今后几年我国紫杉醇原料药年产量有望超过100公斤大关,从而成为世界主要紫杉醇原料药和制剂的生产大国。
从甲醇析出针状结晶或无定形粉末。熔点213~216℃(分解)。[α]D20-49°(甲醇)。UV最大吸收(甲醇):227,273nm(ε29800,1700)。
a.红外吸收:红外光谱图中的主要吸收带与对照品一致。
b.HPLC鉴别:在含量检测中,检测制备的色谱图中主峰的保留时间与标准制备色谱图中主峰的保留时间一致。
纯度:99-100%,以无水无溶剂的干燥品计.
有关物质:相关物质总≤2.0%
有机挥发性杂质:符合美国药典(USP)和中国药典(CP)有机挥发性杂质要求.
比旋度:[α]20 D=-49.0°~55.0°(10mg/mL的甲醇溶液),以无水无溶剂的干燥品计。
水分:≤4.0%
炽灼残渣:≤0.2%。
它包括a、萃取,以红豆杉为原料获得含有紫杉醇的提取物;b、去除胶质,除去提取物中的胶质杂质;c、分离纯化。
红豆杉树皮粉碎(越细越好),85%~95%酒精(料液比是多少?)35-55℃热回流浸提三次(每一次需要多少时间?),50-70℃真空减压浓缩至热测比重1.1~1.2g/ml,氯仿萃取,萃取液浓缩成膏状,得紫杉醇含量1%氯仿膏,将紫杉醇含量1%氯仿膏加氯仿溶解完全,加硅胶搅拌均匀,凉干,过筛,填装到层析柱中,氯仿-甲醇梯度洗脱,TLC检测,分段合并浓缩,得紫杉醇含量5~8%半成品,将紫杉醇含量5~8%半成品加丙酮溶解完全,加硅胶搅拌均匀,凉干,过筛,填装到层析柱中,丙酮-石油醚梯度洗脱,TLC检测,分段合并浓缩,得紫杉醇含量20~25%半成品,用丙酮-石油醚系统结晶3~4次,抽滤,50℃真空减压干燥,得紫杉醇含量75~80%半成品,16Mpa压力层析分离,TLC检测,分段合并浓缩,目标段浓缩物丙酮-石油醚结晶,抽滤,干燥,得紫杉醇含量≥99.5%成品。
高压硅胶层析柱层析去除胶质,同时将紫杉烷化合物分离为紫杉醇、三尖杉宁碱、7-表紫杉醇3部分。
色谱条件与系统适用性试验 用十八烷基硅烷键合硅胶为填充剂;以甲醇-水-乙腈(23:41:36)为流动相,检测波长为227nm。取有关物质项下系统适用性溶液10µl注入液相色谱仪,紫杉醇峰与紫杉醇杂质A峰及杂质B峰的分离度均应大于1.0。
测定法取紫杉醇标准品对照品(贵州迪大生产)约12mg,精密称定,加置100ml量瓶中,加乙腈使溶解并稀释至刻度,摇匀,精密量取10µl注入液相色谱仪,记录色谱图;另取紫杉醇对照品适量,精密称定,同法测定。按外标法以峰面积计算,即得。
本品为天然提取或半合成制备。本品为(2S,5R,7S,10R,13S)-10,20-双(乙酰氧基)-2-苯甲酰氧基-1,7-二羟基-9-氧代-5,20-环氧紫杉烷-11-烯-13-基(3S)-3-苯甲酰氨基-3-苯基-D-乳酸酯。按干燥品计算,含C47H51NO14应为98.0%~102.0%。
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