Functionalized templates for the convergent assembly of polyethers: synthesis of the HIJK rings of gymnocin A.

Functionalized templates for the convergent assembly of polyethers: synthesis of the HIJK rings of gymnocin A.
复制标题

DOI:
10.1002/anie.200900924
复制
发表时间:
2009
影响因子:
16.6
通讯作者:
Jamison, Timothy F.
Jamison, Timothy F.
中科院分区:
化学1区
文献类型:
--
作者:
Van Dyke, Aaron R.;Jamison, Timothy F.

文献摘要

参考文献

被引文献

相似文献

环氧开环级联反应为构建氧杂环的反式 - 顺式稠合阵列提供了一种有吸引力的策略,这是梯型聚醚天然产物(如裸甲藻素A)的一个特征。我们先前已经描述了由一种功能化程度最低的四氢吡喃(THP)环作为模板的高效水促进级联反应,其产物无法直接进行进一步的修饰。为了在面向目标的合成中扩展这种方法的用途,我们现在开发了两种高度功能化的杂环,它们不仅可作为模板,还具有用于修饰和片段偶联的不同官能团。这些模板中的一种(THP 2)类似于天然产物裸甲藻素A的K环(图1)。另一种功能化模板(1,3 - 二氧六环5)虽然在梯型聚醚中未发现,但在合成上具有通用性,并且可以很容易地转化为裸甲藻素A中存在的环。这种新型二氧六环模板在水中的反应性和选择性模式与基于THP的模板显著不同,因此是互补的。
Epoxide-opening cascades offer an attractive strategy for the construction of trans-syn-fused arrays of oxygen heterocycles, a hallmark of ladder-type polyether natural products such as gymnocin A. We have previously described efficient water-promoted cascades templated by a minimally functionalized tetrahydropyran (THP) ring, the products of which were not directly amenable to further elaboration. To expand the utility of this methodology in target-oriented synthesis, we have now developed two highly functionalized heterocycles that not only serve as templates but also possess differentiated functional groups for modification and fragment coupling. One of these templates (THP 2), resembles ring K of the natural product gymnocin A (Figure 1). The other functionalized template (1,3-dioxane 5), while not found in ladder polyethers, is synthetically versatile and can easily be transformed into rings present in gymnocin A. The reactivity and selectivity patterns of this novel dioxane template are significantly different from and thus complementary to those of THP-based templates in water.
DOI: 10.1016/s0040-4020(01)85579-4
发表时间: 1990-01-01
期刊: TETRAHEDRON
影响因子: 2.1
作者:
NICOLAOU, KC;NUGIEL, DA;HWANG, CK
通讯作者: HWANG, CK
DOI: 10.1016/s0040-4039(01)81163-1
发表时间: 1984-01-01
影响因子: 1.8
作者:
NICOLAOU, KC;DUGGAN, ME;LADDUWAHETTY, T
通讯作者: LADDUWAHETTY, T
DOI: 10.1021/ja962345g
发表时间: 1996-10-09
影响因子: 15
作者:
Tu, Y;Wang, ZX;Shi, Y
通讯作者: Shi, Y
DOI: 10.1126/science.1146421
发表时间: 2007-08-31
期刊: SCIENCE
影响因子: 56.9
作者:
Vilotijevic, Ivan;Jamison, Timothy F.
通讯作者: Jamison, Timothy F.
DOI: 10.1055/s-2004-817771
发表时间: 2004-03-09
期刊: SYNLETT
影响因子: 2
作者:
Koch, G;Loiseleur, O;Altmann, KH
通讯作者: Altmann, KH