CN109912629B - 天然产物Trabectedin的制备 - Google Patents

天然产物Trabectedin的制备 Download PDF

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CN109912629B
CN109912629B CN201711331695.1A CN201711331695A CN109912629B CN 109912629 B CN109912629 B CN 109912629B CN 201711331695 A CN201711331695 A CN 201711331695A CN 109912629 B CN109912629 B CN 109912629B
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马大为
何卫明
张志高
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Zhejiang Zhongke Chuangyue Medicine Co ltd
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Abstract

本发明提供了一种天然产物Trabectedin的制备方法,具体地,本发明提供了一种Et‑743的制备方法,所述方法以酪氨酸为起始底物,经过26步反应即可完成合成,且合成路线中采用的原料和试剂都较易获得,反应条件也比较温和,可实现大规模的制备。

Description

天然产物Trabectedin的制备
技术领域
本发明涉及合成领域,具体地,本发明提供了一种天然产物Trabectedin的制备方法。
背景技术
Trabectedin(ecteinascidi-743,Et-743)是从海洋被囊动物红树海鞘Ecteinascidia turbinata的结构极为复杂的海洋天然产物。Trabectedin自2007年在欧盟批准上市用于晚期软组织肿瘤的治疗以来,由于其疗效显著,已经取得数亿美元的销售额。作为第一个现代海洋药物,Trabectedin抗肿瘤活性比目前临床广泛使用的抗肿瘤药物的作用活性高1-3个数量级。目前也被认为是治疗卵巢癌疗效最好的药物。而且西班牙的Zeltia Pharma公司研究发现该化合物对直肠癌、乳腺癌、肺癌、黑色素瘤等有显著的疗效。
Figure BDA0001506762290000011
研究发现从海鞘中提取的Trabectedin(Et-743)最高获取量为0.0001%。这使得从自然界直接获得该化合物作为药源的可能性很低。目前已经有几条合成路线报道,主要都是从芝麻酚或其衍生物出发,如美国E.J.Corey教授发展的路线总长43步,收率0.53%(J.Am.Chem.Soc,1996,118,9202-9203.);日本Fukuyama教授发展的路线总长45步,收率0.78%,由于步骤长,总产率低,部分步骤的可操作性差,这些合成路线被应用于生产的可能性也极为有限。
Figure BDA0001506762290000012
Figure BDA0001506762290000021
目前的药物来源是利用荧光假单孢菌通过发酵的方法获得的cyanosafracin B为原料经过半合成而得到的。即使半合成仍需要22步反应,总收率仅为1.0%。这样一种获得方式使得Trabectedin的生产成本非常高。
综上所述,本领域尚缺乏一种低成本,高效率制备Trabectedin的方法。
发明内容
本发明的目的是提供一种低成本,高效率制备Trabectedin的方法。
本发明的第一方面,提供了一种Et-743的制备方法:
Figure BDA0001506762290000022
其特征在于,包括步骤:
(a)用化合物9与化合物16反应,得到化合物18:
Figure BDA0001506762290000031
(b)用化合物18反应,得到化合物19:
Figure BDA0001506762290000032
(c)用化合物19反应,得到化合物20:
Figure BDA0001506762290000033
(d)用化合物20反应,得到化合物21:
Figure BDA0001506762290000034
(e)用化合物21反应,得到化合物22:
Figure BDA0001506762290000035
(f)用化合物22与
Figure BDA0001506762290000036
反应,得到化合物24:
Figure BDA0001506762290000041
(g)用化合物24反应,得到化合物25:
Figure BDA0001506762290000042
用化合物25制备得到Et-743。
在另一优选例中,所述的步骤(a)中,所述的反应在惰性溶剂(优选为甲苯:DCM:TFE=2.7:1:1)中,在AcOH和4A MS存在下,在70℃下进行,得到化合物18。
在另一优选例中,所述的步骤(b)中,所述的反应在(1)CH3CN/THF混合溶剂中,在HCHO、NaBH3CN、AcOH条件下反应后,在(2)丙酮溶剂中,在K2CO3存在下,回流条件下与AllylBr进行反应,得到化合物19。
在另一优选例中,所述的步骤(c)中,所述的反应在(1)Swern氧化条件下反应后,在DCM中,用DIPEA与化合物19反应,然后与TMSCN反应,得到化合物20。
在另一优选例中,所述的步骤(d)中,所述的反应在DCM中,于-80℃下用化合物20与BCl3反应,然后与TMSCN反应,得到化合物21。
在另一优选例中,所述的步骤(e)中,在-10℃下,在DCM中,用化合物21与(PhSeO)2O反应,得到化合物22。
在另一优选例中,所述的步骤(f)中,在二氯甲烷中,EDCI和DMAP存在下,用化合物22与
Figure BDA0001506762290000043
反应,得到化合物24。
在另一优选例中,所述的步骤(g)中,所述的反应依次在(1)DMSO溶剂中,用化合物24与Tf2O反应;(2)在0℃下,与DIPEA反应;(3)在0℃下,与tBuOH反应;(4)在室温下,与
Figure BDA0001506762290000044
反应;和(5)在室温下,与Ac2O进行反应,得到化合物25。
本发明的第二方面,提供了一种Et-743的制备方法:
Figure BDA0001506762290000051
其特征在于,包括步骤:
(g)用化合物24反应,得到化合物25:
Figure BDA0001506762290000052
用化合物25制备得到Et-743。
在另一优选例中,所述的步骤(g)中,所述的反应依次在(1)DMSO溶剂中,用化合物24与Tf2O反应;(2)在0℃下,与DIPEA反应;(3)在0℃下,与tBuOH反应;(4)在室温下,与
Figure BDA0001506762290000053
反应;和(5)在室温下,与Ac2O进行反应,得到化合物25。
在另一优选例中,所述的制备方法包括如下步骤:
用化合物25进行脱保护反应,得到化合物26:
Figure BDA0001506762290000054
优选地,所述的步骤在DCM中,在AcOH存在下,用Pd(PPh3)4和Bu3SnH与化合物25反应,得到化合物26。
在另一优选例中,所述的制备方法还包括如下步骤:
用化合物26进行氧化反应,得到化合物28:
Figure BDA0001506762290000061
优选地,所述的步骤包括(1)在DMF中,室温下,用化合物
Figure BDA0001506762290000062
与化合物25反应,(2)用DBU继续反应,和(3)用草酸进行反应,得到化合物28。
在另一优选例中,所述的制备方法还包括如下步骤:
用化合物28与化合物29反应,得到化合物30:
Figure BDA0001506762290000063
优选地,所述的步骤包括(1)在无水乙醇中,在NaOAc存在下,用化合物28与化合物29反应,得到化合物30。
在另一优选例中,所述的制备方法还包括如下步骤:
用化合物30反应,得到化合物31(Et-743):
Figure BDA0001506762290000064
优选地,所述的步骤包括(1)在乙腈/水混合溶剂中,用化合物30与AgNO3反应,得到化合物31。
本发明的第三方面,提供了一种选自下组的Et-743中间体化合物:
Figure BDA0001506762290000071
其中,
R1选自下组:H、Bn-、烯丙基、
Figure BDA0001506762290000072
R2选自下组:H、Bn-、烯丙基;
R3选自下组:H、Ac;
R4选自下组:Cbz、
Figure BDA0001506762290000073
R选自下组:H、OH。
本发明的第四方面,提供了一种式16化合物的制备方法,所述方法包括步骤:(vi)用化合物15反应,得到化合物16:
Figure BDA0001506762290000074
本发明的第五方面,提供了一种式15化合物的制备方法,所述方法包括步骤:
(i)用化合物10反应,得到化合物11:
Figure BDA0001506762290000075
(ii)用化合物11反应,得到化合物12:
Figure BDA0001506762290000081
(iii)用化合物12反应,得到化合物13:
Figure BDA0001506762290000082
(iv)用化合物13反应,得到化合物14:
Figure BDA0001506762290000083
(v)用化合物14反应,得到化合物15:
Figure BDA0001506762290000084
或所述的方法包括以下步骤:
(i-a)用化合物9反应,得到化合物32:
Figure BDA0001506762290000085
(ii-a)用化合物32反应,得到化合物33:
Figure BDA0001506762290000086
(iii-a)用化合物33反应,得到化合物34:
Figure BDA0001506762290000091
(iv-a)用化合物34反应,得到化合物35:
Figure BDA0001506762290000092
(v-a)用化合物35反应,得到化合物15:
Figure BDA0001506762290000093
在另一优选例中,在所述步骤(i)中,所述的方法包括:在惰性溶剂中(优选为THF),蓝光条件下,用化合物10反应,得到化合物11。
在另一优选例中,在所述步骤(ii)中,所述的方法包括:在K2CO3存在下,用BnBr进行反应,得到化合物12;优选地,所述的反应在55-65℃下,在丙酮溶剂中进行。
在另一优选例中,在所述步骤(iii)中,所述的方法包括:(1)在NaOH存在下,在MeOH溶剂中,100℃反应;(2)在DCM溶剂中,NEt3存在下,与
Figure BDA0001506762290000094
反应;(3)在NEt3存在下,与AcCl反应,得到化合物13。
在另一优选例中,在所述步骤(iv)中,所述的方法包括:(1)在POCl3存在下,在CH3CN中,于80℃下进行反应;(2)在0℃下,与NaBH4反应,得到化合物14。
在另一优选例中,在所述步骤(v)中,所述的方法包括:在NEt3存在下,与(Boc)2O进行反应,得到化合物15。
在另一优选例中,在所述步骤(vi)中,所述的方法包括:在Swern氧化剂存在下对化合物15进行氧化,得到化合物16。
在另一优选例中,在所述步骤(i-a)中,所述的方法包括:在惰性溶剂中(优选为DCM/TFE=7:1),用BnOCH2CHO与化合物9反应,得到化合物32。优选地,所述的方法在AcOH存在下,在0℃下,4A分子筛存在下进行。
在另一优选例中,在所述步骤(ii-a)中,所述的方法包括:在惰性溶剂中(优选为DCM),在NEt3存在下,用Boc2O与化合物32反应,得到化合物33。
在另一优选例中,在所述步骤(iii-a)中,所述的方法包括:在惰性溶剂中(优选为CH3CN),用Salcomine氧化剂和氧气与化合物33反应,得到化合物34。
在另一优选例中,在所述步骤(iv-a)中,所述的方法包括:在惰性溶剂中(优选为THF),蓝光条件下,用化合物34反应,得到化合物35。
在另一优选例中,在所述步骤(v-a)中,所述的方法包括:在惰性溶剂中(优选为丙酮),65℃下,用化合物35反应,得到化合物15;优选地,所述的反应在BnBr和K2CO3存在下进行。
在另一优选例中,所述的方法还包括步骤:
用化合物8反应,得到化合物10:
Figure BDA0001506762290000101
在另一优选例中,所述的反应包括:在CH3CN中,在室温下,用Salcomine试剂/O2对化合物8进行氧化,得到化合物10。
在另一优选例中,所述的化合物8用酪氨酸作为原料进行制备。
本发明的第六方面,提供了一种式11化合物的制备方法,所述方法包括步骤:
在惰性溶剂中,在蓝光下,用化合物10进行光化学反应,得到式11化合物;
Figure BDA0001506762290000102
在另一优选例中,所述的惰性溶剂选自下组:Et2O、MeCN、甲苯、t-BuOH、THF、DMF、丙酮,或其组合。
在另一优选例中,所述的蓝光为波长范围在400-500nm的光。
本发明的第七方面,提供了一种式35化合物的制备方法,所述方法包括步骤:
在惰性溶剂中,在蓝光下,用化合物34进行光化学反应,得到化合物35:
Figure BDA0001506762290000111
在另一优选例中,所述的惰性溶剂选自下组:Et2O、MeCN、甲苯、t-BuOH、THF、DMF、丙酮,或其组合。
在另一优选例中,所述的蓝光为波长范围在400-500nm的光。
本发明的第八方面,提供了一种式18化合物的制备方法,所述方法包括步骤:
(a)用化合物9与化合物16反应,得到化合物18:
Figure BDA0001506762290000112
在另一优选例中,所述的步骤(a)中,所述的反应在催化剂(优选为选自TFA、BF3·OEt2、HCOOH、TsOH、AcOH、Yb(OTf)3)存在下进行,优选地,所述的催化剂为AcOH。
在另一优选例中,所述的步骤(a)在4A分子筛存在下进行。
在另一优选例中,所述的反应在40-60℃下进行。
在另一优选例中,所述的反应在选自下组的溶剂中进行:甲苯、DCM、TFE,或其组合;优选地,所述的反应在DCM:TFE=1-10:1(优选为3-7:1)(v:v)的混合溶剂中进行。
在另一优选例中,所述的步骤(a)中,所述的反应在60-80℃下进行。
在另一优选例中,所述的反应在甲苯:DCM:TFE=1-5:0.8-1.2:1(v:v:v))溶剂中进行。
本发明的第九方面,提供了一种化合物20的制备方法,所述方法包括步骤:
(c)用化合物19反应,得到化合物20:
Figure BDA0001506762290000121
在另一优选例中,所述的步骤(c)中,所述的方法包括:在Swern氧化条件下反应后,在TFA、DCM、TMSCN存在下进行关环。
本发明的第十方面,提供了一种化合物25的制备方法,所述方法包括步骤:
(g)用化合物24反应,得到化合物25:
Figure BDA0001506762290000122
在另一优选例中,所述的步骤(g)中,所述的反应包括:
化合物24依次在(1)Tf2O,DMSO;(2)DIPEA,0℃;(3)tBuOH,室温;(4)
Figure BDA0001506762290000123
和(5)Ac2O,室温条件下反应,得到化合物25。
应理解,在本发明范围内中,本发明的上述各技术特征和在下文(如实施例)中具体描述的各技术特征之间都可以互相组合,从而构成新的或优选的技术方案。限于篇幅,在此不再一一累述。
具体实施方式
本发明人经过长期而深入的研究,得到了一种Trabectedin的合成方法,所述方法以酪氨酸为起始底物,经过26步反应即可完成合成,且合成路线中采用的原料和试剂都较易获得,反应条件也比较温和,可实现大规模的制备。基于上述发现,发明人完成了本发明。
Trabectedin的合成
目前的药物来源是利用荧光假单孢菌通过发酵的方法获得的cyanosafracin B为原料经过半合成而得到的。即使半合成仍需要22步反应,总收率仅为1.0%。这样一种获得方式使得Trabectedin的生产成本非常高。
本发明提供一条全新的合成路线,以酪氨酸为起始底物和天然手性源,通过简洁高效的光催化反应关上五元环,Bischler-Napieralski反应构建第一个四氢异喹啉环,或者利用Pictet-Spengler反应关上第一个四氢异喹啉环,再利用高效的光催化反应关上五元环。Pictet-Spengler反应将左右两个片段关环连接,构建分子骨架中的第二个四氢异喹啉环,分子内的Strecker反应,关上分子骨架结构中的哌嗪环,从而完成分子五环骨架的构建。随后进行脱保护基操作,缩合连接上半胱氨酸边链,关上十元硫杂内酯环,第二个Pictet-Spengler反应接上最后一个四氢异喹啉结构,从而完成该分子的合成工作。该路线采用汇聚式合成策略,从易得的天然手性源酪氨酸出发,最短线性步骤26步即可完成Et-743的全合成,而且合成路线中采用的原料和试剂都较易获得,反应条件也比较温和,可实现大规模的制备。
合成路线概览
本发明的新路线可从酪氨酸出发分别合成化合物9和16,这两个化合物通过P-S反应合成关键中间体18,再经过多步转化得到化合物25,此前都是新合成路线,随后化合物25经过脱保护转化为已有的高级中间体,并采用此前报道的路线合成Et-743。其中化合物8根据已知文献报道,从L-酪氨酸出发,经6步合成(R.Chen,D.Zhu,Z.Hu,Z.Zheng,X.Chen,Tetrahedron:Asymmetry,2010,21,39-42.)
Figure BDA0001506762290000131
(1)化合物9的合成
化合物9由化合物8氢化脱除保护基而得。
Figure BDA0001506762290000141
(2)化合物16的合成
从化合物8出发经多步反应通过化合物10、11、12、13、14、15制备。其中各个新化合物均通过1H NMR,13C NMR,MS确定结构,化合物15通过Noesy确定顺反结构。
Figure BDA0001506762290000142
其中,由化合物10制备化合物11这一步光催化反应为比较关键和新颖的反应,该方法可以将常规需要3步完成的转化一步完成,且收率良好,反应条件简单,适合大规模制备。
化合物16也可以通过以下途径,由化合物9制备化合物15,再由化合物15制备得到:
Figure BDA0001506762290000151
发明人对于化合物10制备化合物11,以及化合物34制备化合物35的这两步光反应进行了条件优化,结果如下:
Figure BDA0001506762290000152
Figure BDA0001506762290000153
Figure BDA0001506762290000161
[a]反应条件:化合物10或34(0.5mmol),溶剂(5mL),RT,2h.
[b]产率根据1H NMR(使用CH2Br2作为内标)分析计算.
由上述结果筛选得到优选光源为蓝光,对DMF,丙酮,乙腈,叔丁醇,甲苯等进行溶剂的筛选,优选溶剂为THF。
(3)化合物25的合成
通过Pictet-Spengler反应将左右两个片段(化合物9和16)关环连接,构建分子骨架中的第二个四氢异喹啉环,然后通过分子内的Strecker反应,关上分子骨架结构中的哌嗪环,从而完成分子五环骨架的构建(化合物19制备化合物20)。随后进行脱保护基操作得到化合物22,缩合连接上半胱氨酸边链得到化合物24,关上十元硫杂内酯环得到化合物25:
Figure BDA0001506762290000162
(4)Et-743的合成
从化合物25出发,参照之前Corey报道的方法合成(J.Am.Chem.Soc,1996,118,9202-9203),通过Pictet-Spengler反应接上最后一个四氢异喹啉结构,从而完成Et-743分子的合成工作
Figure BDA0001506762290000171
Et-743中间体化合物
在本发明方法中,得到了一系列可以用于制备Et-743的中间体化合物:
Figure BDA0001506762290000172
其中,
R1选自下组:H、Bn-、烯丙基、
Figure BDA0001506762290000173
R2选自下组:H、Bn-、烯丙基;
R3选自下组:H、Ac;
R4选自下组:Cbz、
Figure BDA0001506762290000181
R选自下组:H、OH。
优选的中间体结构如下:
Figure BDA0001506762290000182
其中,化合物18也可以采用以下几个具有不同保护基的中间体进行合成。
Figure BDA0001506762290000191
与现有技术相比,本发明的主要优点包括:
(1)本发明的合成路线从Et 743生源途径得到启发,以易得的天然手性源酪氨酸为唯一的起始底物出发,快速高效地构建重要的五环骨架中间体,且合成路线中采用的原料和试剂都较易获得,成本低廉;
(2)本发明合成方法的各步反应条件皆比较温和,光催化的关环反应绿色高效,适合大规模的制备;
(3)本发明方法合成路线短,26步即可完成Et-743的全合成,制备简单。
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。下列实施例中未注明具体条件的实验方法,通常按照常规条件,或按照制造厂商所建议的条件。除非另外说明,否则百分比和份数按重量计算。
化合物8根据已知文献报道,从L-酪氨酸出发,经6步合成(R.Chen,D.Zhu,Z.Hu,Z.Zheng,X.Chen,Tetrahedron:Asymmetry,2010,21,39-42.)
实施例1、化合物9的合成
Figure BDA0001506762290000192
将化合物8(6.7g,19.4mmol)溶于甲醇中,称量0.67g的10%Pd/C于250ml的烧瓶中,氩气保护下注射甲醇,加入到体系中,氢气充换气3次,1个大气压下常温反应6小时,TLC板(DCM:MeOH=10:1)上原料点反应完全,用硅藻土过滤掉Pd/C,减压蒸馏除去溶剂,得到4.0g化合物9,收率98%。
化合物9:1H NMR(400MHz,CD3OD)δ6.60(d,J=1.9Hz,1H),6.55(d,J=1.5Hz,1H),3.73(s,3H),3.63(dd,J=11.3,3.9Hz,1H),3.45(dd,J=11.2,6.6Hz,1H),3.22(td,J=11.0,6.9Hz,1H),2.72(dd,J=13.6,7.3Hz,1H),2.62(dd,J=13.2,7.5Hz,1H),2.22(s,3H).
13C NMR(100MHz,CD3OD)δ151.21,146.30,134.10,132.93,123.44,116.04,63.73,60.41,55.65,37.81,15.95.
HRMS(ESI):calcd.for C11H18NO3[M+H]+212.1287;found 212.1291
实施例2、化合物10的合成
Figure BDA0001506762290000201
将原料8(6.0g,17.38mmol)充换氧气,在氧气的气氛下加入溶剂乙腈溶解,加入催化剂salcomine(0.56g,1.74mmol),室温氧气气氛下搅拌反应,混合体系呈黑色,2h反应完全,用硅藻土过滤除掉黑色催化剂,减压蒸馏除去溶剂,快速柱层析纯化(EA:PE=1:2),得到5.6g亮黄色固体10,收率91%。
化合物10:1H NMR(400MHz,CDCl3)δ7.35-7.25(m,5H),6.48(s,1H),5.45-5.43(d,J=8.68Hz,1H),5.07-4.97(m,2H),4.00(s,3H),3.90-3.80(m,1H),3.67-3.51(m,2H),3.11-3.00(m,1H),2.77-2.65(m,1H),2.60-2.47(m,1H),1.93(s,3H)
13C NMR(100MHz,CDCl3)δ188.7,188.3,156.4,155.6,145.3,136.3,132.8,128.7,128.6,128.2,128.0,66.8,64.2,60.9,52.6,31.3,9.0
HRMS(ESI):calcd.for C19H22NO6[M+H]+360.1447;found 360.1451
实施例3、化合物11的合成
Figure BDA0001506762290000202
将黄色化合物10(8.0g,22.3mmol)溶解在220mL无水THF溶剂中,氩气保护,在蓝光照射下室温搅拌反应,8h后反应完全。减压蒸馏除去THF溶剂。快速柱层析纯化(EA:PE=1:2),得到6.6g白色固体产物11,收率82%。:
化合物11:1H NMR(400MHz,CDCl3)δ7.43-7.30(m,5H),6.41(s,1H),5.86(s,2H),5.54-5.52(d,J=7.24Hz,1H),5.11(s,2H),3.79-3.31(m,4H),2.90-2.67(m,2H),2.13(s,3H)
13C NMR(100MHz,CDCl3)δ157.1,148.3,145.7,140.3,136.1,128.6,128.3,128.2,114.4,108.8,107.0,100.7,67.2,62.4,53.7,31.9,9.2
HRMS(ESI):calcd.for C19H22NO6[M+H]+360.1447;found 360.1452
实施例4、化合物12的合成
Figure BDA0001506762290000211
将化合物11(6.6g,18.38mmol)溶于180mL丙酮中,加入K2CO3(5.07g,36.77mmol)和BnBr(3.27mL,27.57mmol),65℃条件下回流反应两小时,点板监测反应已经完全,减压蒸馏除掉丙酮,加水,用乙酸乙酯萃取三次,无水硫酸钠干燥,减压蒸馏除去溶剂,快速柱层析(EA:PE=3:1),得到产品7.67g。收率93%。
化合物12:1H NMR(400MHz,CDCl3)δ7.46–7.29(m,10H),6.57(s,1H),5.94(s,2H),5.37(d,J=7.6Hz,1H),5.08(s,2H),4.78(dd,J=34.5,11.0Hz,2H),3.80–3.68(m,1H),3.43(d,J=2.7Hz,2H),2.75(d,J=7.3Hz,2H),2.22(s,3H).
13C NMR(101MHz,CDCl3)δ156.44,150.12,145.82,143.67,136.59,136.38,128.82,128.58,128.51,128.05,128.03,127.96,122.74,113.45,107.28,101.26,76.07,66.62,63.31,54.23,31.56,9.80.
HRMS(ESI):calcd.for C26H27NO6[M+H]+450.1917;found 450.1918
实施例5、化合物13的合成
Figure BDA0001506762290000212
将化合物12(2.54g,5.66mmol)溶解在50mL的甲醇中,加入2M的NaOH水溶液30mL,此时混合液呈浑浊状,升温至100℃回流,体系逐渐变澄清。2小时后反应完全,减压蒸馏除去甲醇,乙酸乙酯萃取,合并有机相,无水硫酸钠干燥,减压蒸馏除去溶剂,得到的粗品溶解在50mL的无水二氯甲烷中,加入NEt3(3.13mL,22.64mmol),0℃条件下缓慢滴加溶于10mL二氯甲烷的苄氧基乙酰氯(0.8mL,5.1mmol),15min滴加完毕,反应完全,加入(Ac)2O(1.07mL,11.32mmol),室温下反应2小时。反应完毕后,二氯甲烷萃取三次,合并有机相,减压蒸馏除去溶剂,快速柱层析(EA:PE=1:3),得到2.3g白色固体化合物13,两步收率81%。
化合物13:1H NMR(400MHz,CDCl3)δ7.46–7.29(m,8H),7.27–7.23(m,2H),6.95(d,J=8.2Hz,1H),6.52(s,1H),5.93(d,J=0.6Hz,2H),4.83–4.68(m,2H),4.46(d,J=6.7Hz,2H),4.40–4.28(m,1H),4.13–3.99(m,2H),3.87(d,J=13.8Hz,2H),2.17(s,3H),1.94(s,3H).
13C NMR(100MHz,CDCl3)δ170.8,169.5,150.5,145.8,143.3,137.2,137.0,128.58,128.55,127.75,127.69,122.35,113.6,107.0,101.2,75.4,73.4,69.4,65.1,49.2,31.8,20.7,9.8.
HRMS(ESI):calcd.for C29H32NO7[M+H]+506.2179;found 506.2183
实施例6、化合物14的合成
Figure BDA0001506762290000221
氩气保护条件下,将化合物13(8.5g,16.83mmol)溶解在170mL无水乙腈中,加入POCl3(3.14mL,33.66mmol),升温至80℃回流反应3小时,反应完全后,加入饱和的NaHCO3溶液至反应液中性,乙酸乙酯萃取3次,合并有机相,饱和食盐水洗涤,无水硫酸钠干燥,减压蒸馏除掉溶剂,抽干。将所得的粗产品溶解于150mL的无水甲醇中,0℃分批加入NaBH4(3.18g,84.15mmol),反应4小时。反应完全后,减压蒸馏除去溶剂,得到的粗产品用于下步反应。
化合物14a:1H NMR(400MHz,CDCl3)δ7.46–7.26(m,10H),5.83(s,1H),4.81(d,J=11.2Hz,1H),4.69(d,J=11.2Hz,1H),4.55(q,J=12.0Hz,1H),4.28(d,J=4.5Hz,1H),4.12(dd,J=9.3,2.9Hz,1H),3.85(dd,J=9.3,6.6Hz,1H),3.78(dd,J=10.9,3.7Hz,1H),3.53(dd,J=10.9,7.5Hz,1H),2.97–2.85(m,1H),2.81(dd,J=15.9,2.8Hz,1H),2.32(dd,J=15.5,11.4Hz,1H),2.15(s,1H).
13C NMR(100MHz,CDCl3)δ149.65,144.39,139.49,138.31,137.37,128.56,128.31,128.09,127.85,127.77,127.62,121.95,115.17,112.22,100.70,74.58,73.27,71.53,65.94,54.42,54.09,26.70,9.46.
HRMS(ESI):calcd.for C27H30NO5[M+H]+448.2124;found 448.2120
化合物14b:1H NMR(400MHz,CDCl3)δ7.44–7.22(m,10H),5.83(dd,J=10.4,1.4Hz,2H),4.77(d,J=11.2Hz,1H),4.66(dt,J=11.1,5.7Hz,2H),4.52–4.44(m,2H),3.79(ddd,J=13.7,10.8,2.9Hz,2H),3.61(dd,J=19.2,9.7Hz,2H),3.22–3.12(m,1H),2.74(dd,J=16.6,3.8Hz,1H),2.53(dd,J=16.6,11.1Hz,1H),2.12(s,3H).
13C NMR(100MHz,CDCl3)δ149.60,144.45,139.57,137.89,137.26,128.55,128.43,128.11,127.93,127.82,127.78,119.97,112.75,112.30,101.23,74.42,73.11,68.32,64.73,51.03,49.57,25.17,9.44
HRMS(ESI):calcd.for C27H30NO5[M+H]+448.2124;found 448.2120
实施例7、化合物15的合成
Figure BDA0001506762290000231
.将上步得到的化合物14粗产品溶解在150mL二氯甲烷中,加入(Boc)2O(11.02g,50.49mmol)和NEt3(6.98mL,50.49mmol),室温搅拌反应4小时。反应完全后,加入100mL的水,二氯甲烷萃取三次,合并有机相,饱和食盐水洗涤,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA:PE=6:1),得到4.69g无色油状化合物15,三步收率51%。
化合物15:
Figure BDA0001506762290000232
=1.60(c=1.0,CHCl3)1H NMR(400MHz,CDCl3)δ7.45–7.25(m,10H),5.86(t,J=5.4Hz,2H),5.77–5.42(m,1H),4.73(s,2H),4.71–4.57(m,1H),4.52(d,J=11.8Hz,1H),4.28(d,J=37.5Hz,1H),3.93–3.68(m,3H),3.57–3.19(m,2H),2.99–2.69(m,2H),2.18(s,3H),1.46(s,9H).
化合物15:13C NMR(100MHz,CDCl3)δ155.84,149.26,144.52,139.33,137.68,137.12,128.60,128.34,128.23,128.02,127.76,127.74,80.53,75.22,72.89,70.58,64.36,52.52,49.88,48.51,28.42,23.44,9.50.
HRMS(ESI):calcd.for C32H37NO7Na[M+Na]+570.2468;found 570.2472
实施例8、化合物16的合成
Figure BDA0001506762290000233
将(COCl)2(0.9mL,10.97mmol)溶解于2mL的无水二氯甲烷中,氩气保护,-78℃条件下缓慢滴加溶于2mL二氯甲烷的DMSO(1.56mL,21.94mmol),保持该温度反应30min,随后将化合物15(1.5g,2.74mmol)溶于26mL的二氯甲烷中,缓慢滴加入到体系中。保持-78℃反应。1小时后,加入DIPEA(4.77mL,27.42mmol),-78℃反应30min。反应完全后,加入10mL的饱和氯化铵溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA:PE=1:5),得到1.43g化合物16,收率95%。
化合物16:1H NMR(400MHz,CDCl3)δ9.46(d,J=1.6Hz,0.44H),9.41(d,J=2.7Hz,0.59H),7.45–7.14(m,10H),5.88(d,J=10.3Hz,2H),5.52(t,J=4.6Hz,0.52H),5.28(t,J=4.7Hz,0.45H),4.80–4.68(m,2H),4.56–4.43(m,2H),4.26(t,J=6.8Hz,0.38H),4.01–3.91(m,0.52H),3.84–3.59(m,2H),3.04–2.67(m,2H),2.18(s,3H),1.48(s,4H),1.43(s,5H).
13C NMR(101MHz,CDCl3)δ200.30,199.82,155.62,154.78,149.10,148.73,145.00,144.85,139.54,139.35,138.13,137.93,137.09,136.90,128.61,128.26,128.18,127.59,118.59,118.30,114.50,113.88,112.95,112.79,101.37,101.26,81.87,81.49,75.64,75.56,72.96,72.30,71.99,60.66,59.62,50.34,49.48,28.34,28.25,22.16,21.81,9.52.HRMS(ESI):calcd.for C32H35NO7Na[M+Na]+568.2311;found 568.2310
实施例9、化合物18的合成
Figure BDA0001506762290000241
氩气保护下,将化合物16(3.92g,7.19mmol)和化合物9(2.28g,10.79mmol),4A分子筛(3.9g)混合,溶于40mL/15mL/15mL=Toluene:DCM:TFE混合溶剂中,加入AcOH(2.06mL,35.96mmol),70℃条件下过夜反应。反应完全后,硅藻土过滤除去分子筛,减压蒸馏除去溶剂,快速柱层析(EA:PE=1:2),得到3.58g化合物18,收率67%。
化合物18:
Figure BDA0001506762290000242
=-31.50(c=1.0,CHCl3)1H NMR(400MHz,CDCl3)δ7.35–7.19(m,8H),7.05(d,J=6.4Hz,2H),6.44(s,1H),5.99(s,0.48H),5.85(s,2H),5.64(s,0.52H),5.24(s,1H),5.04(s,1H),4.81–4.29(m,6H),4.01(d,J=49.6Hz,1H),3.67(d,J=7.0Hz,3H),3.57–3.35(m,3H),3.10–2.92(m,1.52H),2.72–2.57(m,1.42H),2.50–2.32(m,2H),2.26(s,3H),2.16(s,13H),1.53(s,9H).
13C NMR(100MHz,CDCl3)δ177.04,156.82,148.77,148.58,146.83,146.17,144.36,143.58,139.24,138.16,137.71,136.67,132.61,131.94,128.54,128.36,122.23,121.54,120.99,119.38,115.03,114.74,112.76,112.46,101.35,81.28,80.77,75.94,75.61,72.14,71.78,66.66,66.19,60.46,60.23,57.67,55.28,54.73,53.88,53.55,52.84,49.91,48.65,32.84,22.57,20.96,20.00,15.86,9.40.
HRMS(ESI):calcd.for C43H50N2O9[M+H]+739.3595;found 739.3599
对于上述反应,发明人对溶剂体系,以及酸进行了条件筛选:筛选结果如下:
对酸以及反应温度进行筛选:
Figure BDA0001506762290000251
最优条件为AcOH,50℃。
对反应溶剂以及酸的当量进行条件筛选:
Figure BDA0001506762290000252
优选条件为:反应溶剂为DCM/TFE=5:1,AcOH当量为3当量,反应温度为50℃。
实施例10、化合物19的合成
Figure BDA0001506762290000253
氩气保护下,将化合物18(3.58g,4.85mmol)溶于CH3CN/THF(40mL:10mL)混合溶剂中,加入37%的甲醛溶液(3.93g,48.5mmol),室温下搅拌反应20分钟,后加入NaBH3CN(0.76g,12.13mmol),室温下搅拌反应20分钟,加入AcOH(0.69mL,12.13mmol),室温下搅拌反应90分钟,反应完全后,减压蒸馏除去溶剂,加饱和碳酸氢钠溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂得到粗产品。将粗产品溶于50mL的丙酮中,加入K2CO3(4.68g,33.95mmol)和烯丙基溴(4.11g,33.95mmol),65℃回流反应4小时,反应完全后,减压蒸馏除去丙酮溶剂,加水,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA:PE=1:3),得3.42g化合物19,两步收率89%。
化合物19:1H NMR(400MHz,CDCl3)δ7.42–7.21(m,8H),7.08(s,2H),6.72(s,1H),6.37(s,1H),5.90–5.84(m,2H),5.60(s,1H),5.44–5.01(m,3H),4.65–4.48(m,4H),4.43(s,1H),4.31(s,1H),4.12(dd,J=14.2,7.1Hz,1H),3.94–3.69(m,3H),3.60(s,3H),3.48(d,J=11.0Hz,1H),3.13–2.64(m,4H),2.59–2.32(m,5H),2.23(s,3H),2.14(s,3H),1.48(s,9H).
13C NMR(100MHz,CDCl3)δ171.20,155.76,149.88,148.59,148.27,144.26,139.41,138.39,136.76,134.88,133.13,130.37,128.53,128.37,128.18,128.15,127.67,127.39,124.66,120.93,118.42,112.25,101.13,79.97,75.82,74.49,72.50,64.06,62.45,59.97,51.12,45.34,33.31,21.09,15.90,14.23,9.36.
HRMS(ESI):calcd.for C47H57N2O9[M+H]+793.4064;found 793.4068
实施例11、化合物20的合成
Figure BDA0001506762290000261
将(COCl)2(1.21mL,14.75mmol)溶解于3mL的无水二氯甲烷中,氩气保护,-78℃条件下缓慢滴加溶于3mL二氯甲烷的DMSO(2.10mL,29.52mmol),保持该温度反应30min,随后将化合物19(2.92g,3.69mmol)溶于30mL的二氯甲烷中,缓慢滴加入到体系中。保持-78℃反应。1小时后,加入DIPEA(4.50mL,25.83mmol),-78℃反应30min。反应完全后,加入15mL的饱和氯化铵溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,得到的粗品溶于40mL DCM/TFA=4:1的混合溶剂中,室温下搅拌反应2小时,加入TMSCN(1.83g,18.45mmol),室温下搅拌反应2小时,缓慢加入饱和碳酸氢钠溶液,二氯甲烷萃取三次,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:3),得到2.22g化合物20,两步收率86%。
化合物20:1H NMR(400MHz,CDCl3)δ7.54–7.21(m,10H),6.65(s,1H),6.01(ddt,J=16.4,10.4,6.0Hz,1H),5.89(dd,J=19.3,1.3Hz,2H),5.31(dd,J=17.1,1.4Hz,1H),5.12(d,J=10.3Hz,1H),4.68(dd,J=11.5,6.4Hz,2H),4.55–4.43(m,3H),4.38–4.26(m,2H),4.18(dd,J=8.5,2.1Hz,1H),4.10(d,J=2.2Hz,1H),3.69(s,3H),3.55(dd,J=9.2,2.5Hz,1H),3.32(dd,J=15.4,2.2Hz,1H),3.28–3.12(m,3H),2.94(dd,J=17.7,8.1Hz,1H),2.61(d,J=17.7Hz,1H),2.28(s,3H),2.24(s,3H),2.12(s,3H),1.92(dd,J=15.3,11.6Hz,1H).
13C NMR(101MHz,CDCl3)δ149.67,148.70,148.20,144.36,139.37,138.39,137.13,134.28,130.77,130.23,128.58,128.39,128.36,128.25,127.52,127.37,124.66,124.06,121.47,118.79,117.95,112.80,112.21,101.13,76.43,75.21,73.83,73.39,61.96,59.99,57.33,57.25,57.01,55.53,41.78,26.40,25.51,15.89,9.33.
HRMS(ESI):calcd.for C43H46N3O6[M+H]+700.3387;found 700.3390
实施例12、化合物21的合成
Figure BDA0001506762290000271
氩气保护下,将化合物20(0.5g,0.715mmol)溶解在10mL的无水二氯甲烷中,冷却至-80℃,缓慢滴加1M的BCl3的二氯甲烷溶液(5.01mL,5.01mmol),维持该温度反应1小时,反应完全后,-80℃条件下加入5mL的甲醇淬灭,减压蒸馏除去溶剂,加入饱和碳酸氢钠溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(DCM/MeOH=20:1),得到0.30g化合物21,收率为81%。
化合物21:1H NMR(400MHz,CDCl3)δ6.68(s,1H),6.10(ddd,J=16.1,10.8,5.7Hz,1H),5.85(d,J=21.2Hz,2H),5.43(dd,J=17.2,1.5Hz,1H),5.26(dd,J=10.4,1.0Hz,1H),4.96(s,1H),4.71(dd,J=12.6,5.5Hz,1H),4.41(ddt,J=12.7,5.8,1.2Hz,1H),4.14(d,J=2.0Hz,1H),4.05(d,J=2.5Hz,1H),3.97(t,J=3.0Hz,1H),3.77(s,3H),3.63(dd,J=11.1,3.5Hz,1H),3.43(d,J=10.2Hz,1H),3.39–3.30(m,2H),3.13–2.98(m,2H),2.51(d,J=18.1Hz,1H),2.33(s,3H),2.21(s,3H),2.07(s,3H),1.81(dd,J=15.4,11.9Hz,1H).
化合物21:13C NMR(100MHz,CDCl3)δ149.58,149.10,145.14,144.40,136.49,134.18,131.21,129.56,124.95,123.59,117.80,117.68,113.36,113.09,106.29,100.87,73.58,63.71,60.21,60.17,58.08,57.20,56.62,55.37,41.78,25.80,25.65,15.80,8.82.
HRMS(ESI):calcd.for C29H34N3O6[M+H]+520.2448;found 520.2450
实施例13、化合物22的合成
Figure BDA0001506762290000281
氩气保护下,将化合物21(0.6g,1.16mmol)溶解在30mL的无水二氯甲烷中,冷却至-10℃,将(PhSeO)2O(0.37g,1.16mmol)溶解在10mL的二氯甲烷中,缓慢加入到反应体系中,在-10℃条件下反应10分钟,反应完全后,加入饱和的碳酸氢钠溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:1),得到0.53g化合物22,收率为86%。
化合物22isomer1:1H NMR(400MHz,CDCl3)δ6.62(s,1H),5.99(ddt,J=16.3,10.4,5.8Hz,1H),5.86(s,1H),5.76(s,1H),5.29(dd,J=17.1,1.5Hz,1H),5.20(dd,J=10.4,1.3Hz,1H),4.56(ddt,J=12.5,5.6,1.3Hz,1H),4.29(ddt,J=12.5,6.1,1.2Hz,1H),4.24(d,J=2.8Hz,1H),4.09(dd,J=13.4,1.2Hz,1H),4.03–3.94(m,2H),3.75(dt,J=11.9,2.8Hz,1H),3.68(s,3H),3.62(d,J=2.7Hz,1H),3.39(d,J=8.7Hz,1H),3.03–2.84(m,2H),2.54(d,J=17.9Hz,1H),2.22(s,3H),2.20(s,3H),2.12(dd,J=14.0,2.8Hz,1H),1.80(s,3H).
13C NMR(101MHz,CDCl3)δ200.47,159.83,149.49,148.70,137.64,134.05,130.63,130.12,124.74,123.84,117.81,116.66,113.61,105.04,100.80,73.26,72.25,59.94,58.33,57.27,56.71,56.65,56.04,55.21,41.55,41.48,25.49,15.92,7.16.HRMS(ESI):calcd.for C29H34N3O7[M+H]+536.2397;found 536.2400
化合物22isomer2:1H NMR(400MHz,CDCl3)δ6.69(s,1H),6.01(ddt,J=16.5,10.4,5.8Hz,1H),5.85(d,J=0.7Hz,2H),5.32(dd,J=17.1,1.5Hz,1H),5.18(dd,J=10.3,1.3Hz,1H),4.72(dd,J=12.6,5.5Hz,1H),4.33(dd,J=12.6,6.1Hz,1H),4.09(d,J=2.6Hz,1H),4.01(d,J=2.3Hz,1H),3.96(s,3H),3.87(t,J=3.4Hz,1H),3.78(dd,J=11.6,4.0Hz,1H),3.61(dd,J=11.7,2.9Hz,1H),3.30(dd,J=12.9,5.1Hz,2H),3.01(dd,J=18.0,7.9Hz,1H),2.60(d,J=17.9Hz,1H),2.29(s,3H),2.23(s,3H),2.19(dd,J=10.7,4.8Hz,1H),1.98(dd,J=15.4,8.1Hz,1H),1.80(s,3H).
13C NMR(100MHz,CDCl3)δ198.75,158.94,149.31,149.24,140.37,134.11,131.27,130.14,125.10,122.64,117.80,116.96,111.09,104.36,101.64,73.73,70.32,61.58,60.64,58.42,57.96,57.31,55.24,55.20,41.85,36.37,25.66,15.83,7.32.HRMS(ESI):calcd.for C29H34N3O7[M+H]+536.2397;found 536.2400
实施例14、化合物24的合成
Figure BDA0001506762290000291
氩气保护下,将化合物22(180mg,0.336mmol),化合物23(387mg,1.01mmol),EDCI(321mg,1.68mmol)和DMAP(205mg,1.68mmol)混合溶解在30mL的无水二氯甲烷中,室温下搅拌反应5小时,反应完全后,加入饱和的氯化铵溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:2)得到261mg化合物24,收率85%。
化合物24:1H NMR(400MHz,CDCl3)δ7.74(d,J=7.5Hz,2H),7.66(d,J=7.4Hz,2H),7.41–7.35(m,2H),7.34–7.27(m,2H),6.54(d,J=11.7Hz,1H),6.03–5.84(m,2H),5.71–5.58(m,3H),5.37–5.13(m,5H),4.68(d,J=12.5Hz,1H),4.60–4.47(m,4H),4.39(dd,J=12.7,5.0Hz,1H),4.28(dd,J=12.5,6.1Hz,1H),4.11(t,J=6.0Hz,1H),3.95(dd,J=9.1,6.3Hz,1H),3.87(d,J=2.5Hz,1H),3.71(s,1H),3.67(s,1H),3.27(t,J=8.5Hz,1H),3.15(d,J=6.3Hz,1H),2.97(d,J=3.0Hz,1H),2.84(dd,J=17.9,8.4Hz,1H),2.39(d,J=17.8Hz,1H),2.19(s,1H),2.16(d,J=4.1Hz,1H),1.77(d,J=6.9Hz,1H).
13C NMR(101MHz,CDCl3)δ200.23,170.52,160.06,155.82,149.48,148.68,145.62,145.59,145.54,141.11,141.07,138.54,138.49,134.04,132.44,130.67,129.97,127.69,127.14,124.84,124.80,124.62,123.72,119.93,118.01,117.79,116.82,111.54,104.87,101.04,73.22,72.25,66.02,63.77,59.92,58.11,56.61,56.56,56.09,55.20,54.02,46.95,46.88,41.81,41.44,35.95,35.23,31.91,29.29,25.52,22.68,7.12.
HRMS(ESI):calcd.for C50H53N4O10S[M+H]+901.3482;found 901.3484
实施例15、化合物25的合成
Figure BDA0001506762290000292
将Tf2O(34μL,0.2mmol)加入干燥的氩气保护的反应瓶中,-78℃条件下缓慢滴加溶于4.5mL干燥二氯甲烷的DMSO(36μL,0.5mmol),保持该温度反应20min,随后将化合物24(90mg,0.1mmol)溶解在1.5mL的无水二氯甲烷中,保持-78℃温度缓慢加入到体系中,加完后升温至-40℃,反应40min,随后缓慢滴加DIPEA(139μL,0.8mmol),升温至0℃,反应45min,加入tBuOH(29μL,0.3mmol),0℃条件下反应40min,反应完毕后,移至室温,加入(MeN)2C=N-tBu(141μL,0.7mmol),室温下反应40min,加入(Ac)2O(38μL,0.4mmol),室温下搅拌反应15min,反应完全后,加入饱和氯化铵溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:3),得到36mg化合物25,收率为49%。
化合物25:1H NMR(400MHz,CDCl3)δ6.78(s,1H),6.15–5.88(m,4H),5.45(d,J=17.1Hz,1H),5.32(d,J=17.2Hz,1H),5.25(d,J=10.4Hz,2H),5.02(d,J=11.6Hz,1H),4.81(d,J=9.7Hz,2H),4.65–4.44(m,3H),4.39–4.27(m,2H),4.26–4.12(m,4H),3.80(s,3H),3.46–3.35(m,2H),2.98–2.88(m,J=12.3Hz,2H),2.27(s,6H),2.20(s,3H),2.13(d,J=15.7Hz,1H),2.03(s,3H).
13C NMR(100MHz,CDCl3)δ170.41,168.60,155.43,150.85,148.87,145.77,140.92,140.38,134.53,132.88,131.72,129.97,124.71,124.62,120.22,118.02,118.00,116.64,113.54,113.38,102.02,72.92,65.86,61.34,60.50,59.45,59.28,59.20,55.08,54.60,53.89,41.68,41.58,32.81,23.76,20.46,15.78,9.62.
HRMS(ESI):calcd.for C38H43N4O10S[M+H]+747.2700;found 747.2704
实施例16、化合物26的合成
Figure BDA0001506762290000301
氩气保护下,将化合物25(108mg,0.145mmol)和Pd(PhPPh3)4(66.84mg,0.058mmol),溶解于5mL的二氯甲烷中,加入Bu3SnH(0.12ml,0.434mmol)和AcOH(0.05ml,0.868mmol),室温下搅拌反应3小时,反应完全后,加入饱和碳酸氢钠溶液,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(DCM/MeOH=10:1),得到76mg的化合物26,收率85%。
化合物26:1H NMR(400MHz,CDCl3)δ6.51(s,1H),6.07(d,J=1.3Hz,1H),5.98(d,J=1.3Hz,1H),5.01(d,J=11.5Hz,1H),4.52(s,1H),4.25(d,J=4.7Hz,2H),4.18(d,J=2.5Hz,1H),4.13(dd,J=11.6,1.8Hz,1H),3.78(s,2H),3.43-3.38(m,2H),3.32(s,1H),2.92-2.87(m,2H),2.30(s,3H),2.28(s,3H),2.22(m,2H),2.18(s,3H),2.03(s,3H).
13C NMR(100MHz,CDCl3)δ174.11,168.65,147.91,145.69,142.97,141.02,140.34,130.51,129.41,120.80,120.44,118.25,118.17,113.71,113.38,101.95,61.39,60.24,60.12,59.35,59.15,54.68,54.62,53.98,41.78,41.52,34.22,23.83,20.60,15.70,9.64.
HRMS(ESI):calcd.for C31H35N4O8S[M+H]+623.2176;found 623.2180
实施例17、化合物28的合成
Figure BDA0001506762290000311
氩气保护下,将化合物27(44mg,0.157mmol)溶解在1.5mL的无水DMF中,将溶解在1.5mLDCM中的化合物26(14mg,0.0225mmol)加入到体系中,室温下搅拌反应4小时,随后将DBU(8.6mg,0.0562mmol)溶于0.5mL的无水DCM中,0℃条件下缓慢加入到体系中,此时反应液呈黑色。反应20分钟后,0℃加入1mL的草酸饱和溶液,放置室温反应45min,反应完全后,0℃加入碳酸氢钠溶液,用乙醚萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:2),得到8.0mg化合物28,收率为57%。
化合物28:1H NMR(400MHz,CDCl3)δ6.49(s,1H),6.11(d,J=1.3Hz,1H),6.02(d,J=1.3Hz,1H),5.78(s,1H),5.09(d,J=11.4Hz,1H),4.66(s,1H),4.39(s,1H),4.28(d,J=5.0Hz,1H),4.21(dd,J=11.4,1.8Hz,1H),4.16(d,J=1.9Hz,1H),3.75(s,3H),3.55(d,J=5.0Hz,1H),3.43(d,J=8.3Hz,1H),2.92(d,J=9.6Hz,1H),2.82(s,1H),2.70(d,J=17.8Hz,1H),2.56(d,J=13.9Hz,1H),2.32(s,3H),2.24(s,3H),2.15(s,3H),2.04(s,3H).
13C NMR(100MHz,CDCl3)δ186.71,168.56,160.52,147.21,146.40,143.01,141.67,140.70,130.41,129.90,121.69,120.04,117.89,117.12,113.50,113.39,102.25,61.76,61.40,60.33,59.80,58.93,54.61,43.24,41.63,36.88,24.16,20.36,15.81,9.68.
HRMS(ESI):calcd.for C31H32N3O9S[M+H]+622.1859;found 622.1862
实施例18、化合物30的合成
Figure BDA0001506762290000312
氩气保护下,将化合物28(29mg,0.0467mmol),化合物29(95mg,0.467mmol)和NaOAc(43mg,0.514mmol)混合溶解于5mL的无水乙醇中,室温下搅拌反应5小时,反应完全后,减压蒸馏除去溶剂,加水,用乙酸乙酯萃取三次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(DCM/MeOH=20:1),得到33mg化合物30,收率为92%。
化合物30:1H NMR(400MHz,CDCl3)δ6.60(s,1H),6.48(s,1H),6.42(s,1H),6.05(s,1H),5.98(s,1H),5.84(s,1H),5.02(d,J=11.5Hz,1H),4.58(s,1H),4.34(s,1H),4.28(d,J=4.8Hz,1H),4.18(d,J=2.4Hz,1H),4.13(d,J=9.7Hz,1H),3.78(d,J=14.4Hz,3H),3.62(s,3H),3.51(d,J=4.5Hz,1H),3.44–3.40(m,1H),3.20–3.10(m,1H),2.94(d,J=5.1Hz,2H),2.88(s,1H),2.68(s,1H),2.50(d,J=15.4Hz,1H),2.36(d,J=17.7Hz,1H),2.33(s,3H),2.27(s,3H),2.20(s,3H),2.04(s,3H).
13C NMR(100MHz,CDCl3)δ172.55,168.21,147.86,145.33,144.60,144.36,143.07,141.34,140.13,130.78,129.42,129.07,125.62,121.15,120.73,118.17,118.14,114.14,114.07,113.43,109.80,101.87,64.62,61.12,60.37,60.06,59.67,59.57,55.19,54.71,54.62,42.16,41.87,41.62,39.67,28.72,24.18,20.45,15.84,9.74.
HRMS(ESI):calcd.for C40H43N4O10S[M+H]+771.2700;found 771.2703
实施例19、Et-743的合成
Figure BDA0001506762290000321
氩气保护下,将化合物29(7.7mg,0.01mmol)溶于1mL按比例配制的乙腈,水的混合溶剂中,加入AgNO3(32.3mg,0.19mmol),室温下搅拌反应24h,分别加入1mL的饱和氯化钠和饱和碳酸氢钠溶液搅拌10min,用乙酸乙酯萃取3次,合并有机相,无水硫酸钠干燥,过滤,减压蒸馏除去溶剂,快速柱层析(DCM/MeOH=20:1),得到7.2mg的化合物31(Et-743)。收率为95%。
1H NMR(400MHz,CDCl3)δ6.63(s,1H),6.48(s,1H),6.43(s,1H),6.03(d,J=1.1Hz,1H),5.95(d,J=1.1Hz,1H),5.85(s,1H),5.12(d,J=11.4Hz,2H),4.89(s,1H),4.54(d,J=25.4Hz,2H),4.06(dd,J=11.4,2.1Hz,2H),3.82(s,3H),3.62(s,3H),3.46–3.31(m,2H),3.25–3.09(m,2H),3.03–2.78(m,4H).2.35(s,3H),2.27(s,3H),2.16(s,3H),2.03(s,3H).
HRMS(ESI):calcd.for C39H42N3O10S[M-OH]+744.2591;found 744.2594
化合物15也可以以化合物9为原料,按照以下优化的路线合成,具体操作实例以及化合物数据如下:
实施例20、化合物32的合成
Figure BDA0001506762290000331
氩气保护下,将化合物9(10.1g,47.86mmol)溶解在DCM(175ml),TFE(25ml)的混合溶剂中,加入苄氧基乙醛(9.3g,62.22mmol)和4AMS(10.1g),-10℃下缓慢滴加AcOH(0.72g,12.0mmol),保持-10℃下反应4小时,随后升温至0度继续反应4小时。反应完全后,用硅藻土过滤除去分子筛,加入饱和的碳酸氢钠溶液,二氯甲烷萃取三次,合并有机相,减压蒸馏除去溶剂,快速柱层析(DCM/MeOH=20:1),得到14.6g白色固体化合物32,收率89%。
化合物32:1H NMR(400MHz,CDCl3)δ7.36–7.26(m,5H),6.46(s,1H),4.54(q,J=12.1Hz,2H),4.44(t,J=4.8Hz,1H),3.99(dd,J=9.2,4.3Hz,1H),3.80(dd,J=9.2,5.9Hz,1H),3.76(s,3H),3.72(dd,J=10.8,3.8Hz,1H),3.50(dd,J=10.8,7.0Hz,1H),2.98–2.90(m,1H),2.55–2.47(m,2H),2.24(s,3H).
13C NMR(100MHz,CDCl3)δ146.21,143.90,138.10,132.60,128.68,128.36,127.76,127.65,122.26,120.70,73.73,73.23,66.18,60.57,54.04,53.28,32.56,15.64.
HRMS(ESI):calcd.for C20H26NO4[M+H]+344.1862;found 344.1864
实施例21、化合物33的合成
Figure BDA0001506762290000332
氩气保护下,将化合物32(1.2g,3.5mmol)溶解在35ml的无水DCM中,加入(Boc)2O(0.92g,4.2mmol)和NEt3(0.97ml,7.0mmol),室温下搅拌反应5小时。反应完全后,加入50ml的水,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:4),得到1.5g白色泡沫状产物33,收率97%。
化合物33:1H NMR(400MHz,CDCl3)δ7.33–7.25(m,5H),6.53(s,1H),6.24(d,J=27.2Hz,1H),5.90(d,J=110.2Hz,1H),4.89–4.62(m,1H),4.55(d,J=11.7Hz,1H),4.23(d,J=23.1Hz,1H),3.96(d,J=16.5Hz,1H),3.76(s,1H),3.67(dd,J=21.7,12.9Hz,2H),3.61–3.30(m,2H),3.11–2.69(m,2H),2.26(s,3H),1.45(s,9H).
13C NMR(100MHz,CDCl3)δ155.90(s),145.20,143.87,137.72,130.57,130.51,129.72,128.35,127.69,121.44,119.82,80.48,72.66,71.74,71.01,65.87,64.6460.66,53.43,49.57,48.10,28.42,15.72.
HRMS(ESI):calcd.for C25H33NO6Na[M+Na]+466.2206;found 466.2205
实施例22、化合物34的合成
Figure BDA0001506762290000341
将化合物33(5.0g,11.3mmol)溶解在100ml无水乙腈中,加入salcomine催化剂(0.36g,1.1mmol),充换气3次,使其在氧气的气氛下反应1小时,反应完全后,过滤掉黑色固体催化剂,减压蒸馏除去乙腈,快速柱层析(EA/PE=1:4),目标产物在柱子上显现黄色,得到4.4g黄色产物34,收率为85%。
化合物34:1H NMR(400MHz,CDCl3)δ7.24–7.11(m,5H),5.20(d,J=74.0Hz,1H),4.44(s,2H),4.34(d,J=11.8Hz,1H),3.80(s,3H),3.77–3.64(m,2H),3.59(d,J=7.1Hz,1H),3.45(m,1H),3.34(m,1H),2.59(d,J=19.0Hz,1H),2.46(ddd,J=19.1,7.5,2.0Hz,1H),1.82(s,3H),1.35(s,9H).
13C NMR(101MHz,CDCl3)δ186.29,181.04,155.60,155.05,140.33,137.07,136.74,136.30,128.38,127.87,127.84,80.80,73.31,72.39,65.03,60.69,50.12,49.22,48.41,28.29,22.84,8.63.
HRMS(ESI):calcd.for C25H31NO7Na[M+Na]+480.1998;found 480.2003
实施例23、化合物35的合成
Figure BDA0001506762290000342
氩气保护下,将化合物34(2.0g,4.38mmol)溶解在44ml的无水四氢呋喃中,在蓝光照射下室温搅拌反应2小时,反应完全后,减压蒸馏除去溶剂,快速柱层析(EA/PE=1:2),得到1.5g化合物白色泡沫状固体35,收率为75%。
化合物35:1H NMR(400MHz,CDCl3)δ7.36–7.22(m,5H),5.80(d,J=10.0Hz,2H),5.63(s,1H),5.45(d,J=22.8Hz,1H),4.75–4.37(m,3H),3.95–3.69(m,4H),3.54(s,1H),2.78(d,J=35.5Hz,2H),2.08(s,3H),1.45(s,9H).
13C NMR(100MHz,CDCl3)δ155.88,146.22,144.13,137.54,136.75,128.33,127.81,127.76,113.06,112.48,106.86,100.72,80.68,72.98,71.21,70.72,67.99,65.66,64.67,28.40,22.96,8.90.
HRMS(ESI):calcd.for C25H33NO6Na[M+Na]+480.1998;found 480.1999
实施例24、化合物15的合成
Figure BDA0001506762290000351
将化合物35(1.5g,3.28mmol)溶解在30ml的丙酮中,加入BnBr(1.12g,6.56mmol)和K2CO3(0.91g,6.56mmol),65℃下回流反应5小时。反应完全后,减压蒸馏除去溶剂,二氯甲烷萃取三次,合并有机相,无水硫酸钠干燥,减压旋蒸除去溶剂,快速柱层析(EA/PE=1:4),得到1.68g粘稠状化合物15,收率为94%。.
化合物15:
Figure BDA0001506762290000352
=1.60(c=1.0,CHCl3)1H NMR(400MHz,CDCl3)δ7.45–7.25(m,10H),5.86(t,J=5.4Hz,2H),5.77–5.42(m,1H),4.73(s,2H),4.71–4.57(m,1H),4.52(d,J=11.8Hz,1H),4.28(d,J=37.5Hz,1H),3.93–3.68(m,3H),3.57–3.19(m,2H),2.99–2.69(m,2H),2.18(s,3H),1.46(s,9H).
13C NMR(100MHz,CDCl3)δ155.84,149.26,144.52,139.33,137.68,137.12,128.60,128.34,128.23,128.02,127.76,127.74,80.53,75.22,72.89,70.58,64.36,52.52,49.88,48.51,28.42,23.44,9.50.
HRMS(ESI):calcd.for C32H37NO7Na[M+Na]+570.2468;found 570.2472
在本发明提及的所有文献都在本申请中引用作为参考,就如同每一篇文献被单独引用作为参考那样。此外应理解,在阅读了本发明的上述讲授内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。

Claims (9)

1.一种Et-743的制备方法:
Figure FDA0003297943940000011
其特征在于,包括步骤:
(a)用化合物9与化合物16反应,得到化合物18:
Figure FDA0003297943940000012
(b)用化合物18反应,得到化合物19:
Figure FDA0003297943940000013
(c)用化合物19反应,得到化合物20:
Figure FDA0003297943940000014
(d)用化合物20反应,得到化合物21:
Figure FDA0003297943940000021
(e)用化合物21反应,得到化合物22:
Figure FDA0003297943940000022
(f)用化合物22与
Figure FDA0003297943940000023
反应,得到化合物24:
Figure FDA0003297943940000024
(g)用化合物24反应,得到化合物25:
Figure FDA0003297943940000025
用化合物25制备得到Et-743。
2.一种式15化合物的制备方法,其特征在于,包括步骤:
(i)用化合物10反应,得到化合物11:
Figure FDA0003297943940000031
(ii)用化合物11反应,得到化合物12:
Figure FDA0003297943940000032
(iii)用化合物12反应,得到化合物13:
Figure FDA0003297943940000033
(iv)用化合物13反应,得到化合物14:
Figure FDA0003297943940000034
(v)用化合物14反应,得到化合物15:
Figure FDA0003297943940000035
或所述的方法包括以下步骤:
(i-a)用化合物9反应,得到化合物32:
Figure FDA0003297943940000036
(ii-a)用化合物32反应,得到化合物33:
Figure FDA0003297943940000041
(iii-a)用化合物33反应,得到化合物34:
Figure FDA0003297943940000042
(iv-a)用化合物34反应,得到化合物35:
Figure FDA0003297943940000043
(v-a)用化合物35反应,得到化合物15:
Figure FDA0003297943940000044
3.如权利要求2所述的方法,其特征在于,所述的方法还包括步骤:
用化合物8反应,得到化合物10:
Figure FDA0003297943940000045
4.一种式16化合物的制备方法,其特征在于,包括步骤:用如权利要求2所述的方法制备化合物15;和
(vi)用化合物15反应,得到化合物16:
Figure FDA0003297943940000051
5.一种式18化合物的制备方法,其特征在于,包括步骤:用如权利要求4所述的方法制备化合物16,和
(a)用化合物9与化合物16反应,得到化合物18:
Figure FDA0003297943940000052
6.一种式11化合物的制备方法,其特征在于,包括步骤:
在惰性溶剂中,在蓝光下,用化合物10进行光化学反应,得到式11化合物;
Figure FDA0003297943940000053
7.一种式35化合物的制备方法,其特征在于,包括步骤:
在惰性溶剂中,在蓝光下,用化合物34进行光化学反应,得到化合物35:
Figure FDA0003297943940000054
8.一种化合物20的制备方法,其特征在于,包括步骤:用如权利要求5所述的方法制备化合物18,和
(b)用化合物18反应,得到化合物19:
Figure FDA0003297943940000061
(c)用化合物19反应,得到化合物20:
Figure FDA0003297943940000062
9.一种化合物25的制备方法,其特征在于,包括步骤:用如权利要求8所述的方法制备化合物20,和
(g)用化合物24反应,得到化合物25:
Figure FDA0003297943940000063
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