(2S,3R,4S)-5-(tert-butyldimethylsilanyloxy)-2,4-dimethylpentane-1,3-diol | 480999-22-2

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: (2S,3R,4S)-5-(tert-butyldimethylsilanyloxy)-2,4-dimethylpentane-1,3-diol
• 英文别名: (2S,3R,4S)-5-[tert-butyl(dimethyl)silyl]oxy-2,4-dimethylpentane-1,3-diol
• CAS: 480999-22-2
• 化学式: C₁₃H₃₀O₃Si
• 分子量: 262.465
• InChiKey: KNZWSZJHRGVXJC-SDDRHHMPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.63
• 重原子数：
  17
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2S,3R,4S)-5-(tert-butyldimethylsilanyloxy)-2,4-dimethylpentane-1,3-diol 在 咪唑 、 四丁基氟化铵 、 碘 、 sodium hexamethyldisilazane 、 三氧化硫吡啶 、 4-甲基苯磺酸吡啶 、 二异丁基氢化铝 、 戴斯-马丁氧化剂 、 N,N-二异丙基乙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 二甲基亚砜 、 苯 为溶剂， 反应 56.32h， 生成 (2S,3R,6Z,8S,9S,10S,11Z)-3,9-bis(4-methoxybenzyloxy)-14-[(2S,3R,4S,5R,6R)-6-methoxy-4-methoxymethoxy-3,5-dimethyltetrahydropyran-2-yl]-2,8,10-trimethyltetradeca-6,11-dienal
  参考文献：
  名称：

  Simplified Discodermolide Analogues:  Synthesis and Biological Evaluation of 4-epi-7-Dehydroxy-14,16-didemethyl-(+)-discodermolides as Microtubule-Stabilizing Agents

  摘要：

  Several novel analogues of (+)-discodermolide were synthesized via a convergent strategy that used Wittig reactions to append left and right side chains to a central scaffold and then tested for biological activity. Three of the analogues in the 4-epi-7-dehydroxy-14,16-didemethyl series, 6a-c, had interesting actions. The C3-methoxymethyl ether analogue 6b was more active in antiproliferative cell-based assays as well as in hypernucleation and paclitaxel site competition assays with isolated tubulin than the other analogues, including 6a, which contained a free hydroxyl group at the C3 position. The biological results validated the initial hypothesis that the C7 hydroxy group and the C14 and C16 methyl groups of (+)-discodermolide could be deleted without undermining activity. Although less potent than (+)-discodermolide and paclitaxel, compounds 6b and 6c both showed properties unique to (+)-discodermolide. These properties, particularly the capacity to cause hypernucleation of isolated tubulin at lower temperature than paclitaxel, as well as stabilizing preformed microtubules to cold disassembly, are considered mechanistically superior to those of paclitaxel. Other variations in the right and left sides of the discodermolide scaffold revealed additional structure/activity information.

  DOI：

  10.1021/jm0204136
• 作为产物：
  描述：

  ethyl (2R,3S,4S)-2-bromo-5-(tert-butyldimethylsiloxy)-3-hydroxy-2,4-dimethylpentanoate 在 三乙基硼 三正丁基氢锡 、 二异丁基氢化铝 、 magnesium 、 1,2-二溴乙烷 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 2.0h， 生成 (2S,3R,4S)-5-(tert-butyldimethylsilanyloxy)-2,4-dimethylpentane-1,3-diol
  参考文献：
  名称：

  基于迭代路易斯酸促进的醛醇缩合反应，为（+）-discodermolide构架所必需的13个立体生成中心的调节立体选择性构建。

  摘要：

  包含（+）-discodermolide框架所需的13个立体异构中心的C（1）-C（13）和C（15）-C（21）片段是由一种常见的外消旋体以良好至优异的对映选择性和非对映选择性合成的醛，衍生自2-甲基-1,3-丙二醇。外消旋醛与2-溴丙酸乙酯衍生的甲硅烷基乙烯酮缩醛的对映体选择性醛醇缩合反应，在手性草氮杂硼烷酮存在下，用N-甲苯磺酰基-（R）-和-（S）-缬氨酸和BH（3）原位制备THF，在动力学控制下进行，得到具有高度对映选择性的立体三单元组。对映选择性（手性硼烷）和非对映选择性（BF（3）.OEt（2）和TiCl（4））与硅烷基乙烯酮缩醛的醛醇缩合反应，与非对映选择性自由基脱溴反应（Bu（3）SnH，Et（3）B，或没有MgBr（2）），被迭代使用。这种用于聚丙烯酸酯框架构建的羟醛反应策略大大缩短了构建最终链段所需的步骤。

  DOI：

  10.1021/jo034901c

文献信息

• [EN] ANALOGS OF DISCODERMOLIDE AND DICTYOSTATIN-1, INTERMEDIATES THEREFOR AND METHODS OF SYNTHESIS THEREOF<br/>[FR] ANALOGUES DE DISCODERMOLIDE ET DE DICTYOSTATINE-1, INTERMEDIAIRES CORRESPONDANTS, ET PROCEDES DE SYNTHESE CORRESPONDANTS
  申请人：UNIV PITTSBURGH

  公开号：WO2004022552A1

  公开（公告）日：2004-03-18

  A compound of the following structure: wherein R1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; R2 is H, an alkyl group, an aryl group, a benzyl group, a trityl group, -SiRaRbRc, CH2ORd, or CORe; Ra, Rb and Rc are independently an alkyl group or an aryl group; Rd is an alkyl group, an aryl group, an alkoxylalkyl group, -RiSiRaRbRc or a benzyl group, wherein Ri is an alkylene group; Re is an alkyl group, an allyl group, a benzyl group, an aryl group, an alkoxy group, or -NRgRh, wherein Rg and Rh are independently H, an alkyl group or an aryl group; R3 is (CH2)n where n is and integer in the range of 0 to 5, -CH2CH(CH3)-, -CH=CH-, -CH=C(CH3)-, or -C=-C-; R4 is (CH2)p where p is an integer in the range of 4 to 12, -(CHRkl)yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5C(Rsl )=C(Rs2)C(Rs3)=C(Rs4)-, -(CHRk1 )yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5CH(Rs I)CH(Rs2)C(Rs3)=C(Rs4)-, -(CHRk1)yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRks)y5C(Rsl)=C(Rs2)CH(Rs3)CH(Rs4)-, -(CHRkI )yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5CH(Rsl)CH(Rs2)CH(Rs3)CH(R s4)-, wherein y1 and y2 are 1 and y3, y4 and y5 are independently 0 or 1, Rk1, Rk2, Rk3, Rk4 and Rk5 are independently H, CH3, or OR2a, and Rs1, Rs2, Rs3, and Rs4 are independently H or CH3, wherein R2a is H, an alkyl group, an aryl group, a benzyl group, a trityl group, -SiRaRbRc, CH2ORd, or CORe; and R5 is H or OR2b, wherein R2b is H, an alkyl group, an aryl group, an aryl group, a benzyl group, a trityl group, -SiRaRbRc, CH2ORd, or CORe; provided that the compound is not dictyostatin 1.

  以下是该结构的化合物：其中R1为H、烷基基团、芳基、烯基基团、炔基基团或卤素原子；R2为H、烷基基团、芳基、苄基、三苄基、-SiRaRbRc、CH2ORd或CORe；Ra、Rb和Rc独立地为烷基基团或芳基；Rd为烷基基团、芳基、烷氧基烷基团、-RiSiRaRbRc或苄基，其中Ri为烷基烷基团；Re为烷基基团、烯丙基基团、苄基、芳基、烷氧基或-NRgRh，其中Rg和Rh独立地为H、烷基基团或芳基；R3为(CH2)n，其中n为0到5范围内的整数，-CH2CH(CH3)-、-CH=CH-、-CH=C(CH3)-或-C=-C-；R4为(CH2)p，其中p为4到12范围内的整数，-(CHRkl)yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5C(Rsl )=C(Rs2)C(Rs3)=C(Rs4)-、-(CHRk1 )yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5CH(Rs I)CH(Rs2)C(Rs3)=C(Rs4)-、-(CHRk1)yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRks)y5C(Rsl)=C(Rs2)CH(Rs3)CH(Rs4)-、-(CHRkI )yl (CHRk2)y2(CHRk3)y3(CHRk4)y4(CHRk5)y5CH(Rsl)CH(Rs2)CH(Rs3)CH(R s4)-，其中y1和y2为1，y3、y4和y5独立地为0或1，Rk1、Rk2、Rk3、Rk4和Rk5独立地为H、CH3或OR2a，Rs1、Rs2、Rs3和Rs4独立地为H或CH3，其中R2a为H、烷基基团、芳基、苄基、三苄基、-SiRaRbRc、CH2ORd或CORe；R5为H或OR2b，其中R2b为H、烷基基团、芳基、芳基、苄基、三苄基、-SiRaRbRc、CH2ORd或CORe；前提是该化合物不是dictyostatin 1。
• Simplified Discodermolide Analogues:  Synthesis and Biological Evaluation of 4-<i>e</i><i>pi</i>-7-Dehydroxy-14,16-didemethyl-(+)-discodermolides as Microtubule-Stabilizing Agents
  作者：Nakyen Choy、Youseung Shin、Phu Qui Nguyen、Dennis P. Curran、Raghavan Balachandran、Charitha Madiraju、Billy W. Day

  DOI：10.1021/jm0204136

  日期：2003.7.1

  Several novel analogues of (+)-discodermolide were synthesized via a convergent strategy that used Wittig reactions to append left and right side chains to a central scaffold and then tested for biological activity. Three of the analogues in the 4-epi-7-dehydroxy-14,16-didemethyl series, 6a-c, had interesting actions. The C3-methoxymethyl ether analogue 6b was more active in antiproliferative cell-based assays as well as in hypernucleation and paclitaxel site competition assays with isolated tubulin than the other analogues, including 6a, which contained a free hydroxyl group at the C3 position. The biological results validated the initial hypothesis that the C7 hydroxy group and the C14 and C16 methyl groups of (+)-discodermolide could be deleted without undermining activity. Although less potent than (+)-discodermolide and paclitaxel, compounds 6b and 6c both showed properties unique to (+)-discodermolide. These properties, particularly the capacity to cause hypernucleation of isolated tubulin at lower temperature than paclitaxel, as well as stabilizing preformed microtubules to cold disassembly, are considered mechanistically superior to those of paclitaxel. Other variations in the right and left sides of the discodermolide scaffold revealed additional structure/activity information.
• Regulated-Stereoselective Construction of Thirteen Stereogenic Centers Necessary for the Frame of (+)-Discodermolide, Based on Iterative Lewis Acid-Promoted Aldol Reactions
  作者：Syun-ichi Kiyooka、Kazi Abdus Shahid、Fumitaka Goto、Momotoshi Okazaki、Yoshihiro Shuto

  DOI：10.1021/jo034901c

  日期：2003.10.1

  and diastereoselective (BF(3).OEt(2) and TiCl(4)) aldol reactions with the silylketene acetal, coupled with diastereoselective radical debrominations (Bu(3)SnH, Et(3)B, with or without MgBr(2)), were used iteratively. This aldol reaction strategy for the construction of the polypropionate frame dramatically shortened the steps needed for the construction of the final segments.

  包含（+）-discodermolide框架所需的13个立体异构中心的C（1）-C（13）和C（15）-C（21）片段是由一种常见的外消旋体以良好至优异的对映选择性和非对映选择性合成的醛，衍生自2-甲基-1,3-丙二醇。外消旋醛与2-溴丙酸乙酯衍生的甲硅烷基乙烯酮缩醛的对映体选择性醛醇缩合反应，在手性草氮杂硼烷酮存在下，用N-甲苯磺酰基-（R）-和-（S）-缬氨酸和BH（3）原位制备THF，在动力学控制下进行，得到具有高度对映选择性的立体三单元组。对映选择性（手性硼烷）和非对映选择性（BF（3）.OEt（2）和TiCl（4））与硅烷基乙烯酮缩醛的醛醇缩合反应，与非对映选择性自由基脱溴反应（Bu（3）SnH，Et（3）B，或没有MgBr（2）），被迭代使用。这种用于聚丙烯酸酯框架构建的羟醛反应策略大大缩短了构建最终链段所需的步骤。