Convergent Assembly of Highly Potent Analogues of Bryostatin 1 via Pyran Annulation: Bryostatin Look-Alikes That Mimic Phorbol Ester Function
作者:Gary E. Keck、Matthew B. Kraft、Anh P. Truong、Wei Li、Carina C. Sanchez、Noemi Kedei、Nancy E. Lewin、Peter M. Blumberg
DOI:10.1021/ja8022169
日期:2008.5.1
potent bryostatin analogues which contain the complete bryostatin core structure have been synthesized using a pyran annulation approach as a key strategic element. The A ring pyran was assembled using a pyran annulation reaction between a C1-C8 hydroxy allylsilane and an aldehyde comprising C9-C13. This pyran was transformed to a new hydroxy allylsilane and then coupled with a preformed C ring aldehyde
使用吡喃环化方法作为关键战略要素合成了包含完整苔藓抑素核心结构的高效苔藓抑素类似物。A环吡喃使用C1-C8羟基烯丙基硅烷和包含C9-C13的醛之间的吡喃成环反应组装。该吡喃转化为新的羟基烯丙基硅烷,然后在第二个吡喃环中与预先形成的 C 环醛亚单元偶联,同时形成 B 环。这种三环中间体被加工成苔藓抑素类似物,其对 PKC 表现出纳摩尔至亚纳摩尔的亲和力,但在增殖/附着试验中表现出与佛波酯无法区分的特性。
[EN] BRYOSTATIN ANALOGS AND USE THEREOF AS ANTIVIRAL AGENTS<br/>[FR] ANALOGUES DE LA BRYOSTATINE ET UTILISATION DE CEUX-CI EN TANT QU'AGENTS ANTIVIRAUX
申请人:UNIV UTAH RES FOUND
公开号:WO2016025363A1
公开(公告)日:2016-02-18
Described herein are tricyclic macrolactones. The macrolactones have a high binding affinity for PKC. The compounds described herein can be used in a number of therapeutic applications including the treatment or prevention of viral infection. Also described herein are methods for producing macrolactones. The methods permit the high-yield synthesis of macrolactones in a low number of steps and with a high degree of substitution and specificity.
作者:Gary E. Keck、Yam B. Poudel、Thomas J. Cummins、Arnab Rudra、Jonathan A. Covel
DOI:10.1021/ja110198y
日期:2011.2.2
synthetic route adopted is a highly convergent one in which the preformed, heavily functionalizedpyran rings A and C are united by "pyran annulation", the TMSOTf-promoted reaction between a hydroxyallylsilane appended to the A-ring fragment and an aldehyde contained in the C-ring fragment, with concomitant formation of the B ring. Further elaborations of the resulting very highly functionalized intermediate
苔藓抑素 1 是一种海洋天然产物,是一种非常有前景的先导化合物,因为它对多种人类疾病状态显示出强大的生物活性。我们在此描述了该试剂的首次全合成。所采用的合成路线是一种高度收敛的路线,其中预先形成的、高度官能化的吡喃环 A 和 C 通过“吡喃环化”结合,即附加在 A 环片段上的羟基烯丙基硅烷与包含在 A 环片段中的醛之间的 TMSOTf 促进反应。 C 环片段,伴随 B 环的形成。所得的高度官能化中间体的进一步加工包括大环内酯化和仅存在的五个酯键之一的选择性裂解。
Molecular Modeling, Total Synthesis, and Biological Evaluations of C9-Deoxy Bryostatin 1
作者:Gary E. Keck、Yam B. Poudel、Arnab Rudra、Jeffrey C. Stephens、Noemi Kedei、Nancy E. Lewin、Megan L. Peach、Peter M. Blumberg
DOI:10.1002/anie.201001200
日期:2010.6.21
‘OH’ no you don't: The title compound 1 has been synthesized and evaluated for biological function. Molecularmodeling of bryostatin1 with the C1 domain of protein kinase C δ indicates that the C9OH of bryostatin1 makes a hydrogen‐bonding contact to the protein. Despite the absence of the hydrogen‐bonding contact for 1, it displays bryostatin‐like biological effects in four assays using either U937
'OH' no you don't:标题化合物1已合成并评估其生物学功能。苔藓抑素 1 与蛋白激酶 C δ 的 C1 结构域的分子模型表明苔藓抑素 1 的 C9 OH 与蛋白质形成氢键接触。尽管没有1的氢键接触,但它在使用 U937 白血病细胞或前列腺 LNCaP 细胞的四种测定中显示出类似苔藓抑素的生物效应。
Substitution on the A-Ring Confers to Bryopyran Analogues the Unique Biological Activity Characteristic of Bryostatins and Distinct From That of the Phorbol Esters
作者:Gary E. Keck、Yam B. Poudel、Dennie S. Welch、Matthew B. Kraft、Anh P. Truong、Jeffrey C. Stephens、Noemi Kedei、Nancy E. Lewin、Peter M. Blumberg
DOI:10.1021/ol8027253
日期:2009.2.5
A close structural analogue of bryostatin 1, which differs from bryostatin 1 only by the absence of the C-30 carbomethoxy group (on the C-13 enoate of the B-ring), has been prepared by total synthesis. Biological assays reveal a crucial role for substitution in the bryostatin 1 A-ring in conferring those responses which are characteristic of bryostatin 1 and distinct from those observed with PMA.