[EN] NUCLEIC ACID CONJUGATES AND USES THEREOF<br/>[FR] CONJUGUÉS DE TYPE ACIDE NUCLÉIQUE ET LEURS UTILISATIONS
申请人:TRANSLATE BIO MA INC
公开号:WO2018013525A1
公开(公告)日:2018-01-18
Provided herein are conjugates comprising targeting moieties such as sugars, folates and cell-penetrating peptides, which can be used for the improved delivery of agents (e.g., nucleic acids, such as oligonucleotides or mRNAs, or other agents) to cells. The invention provides conjugates and compounds comprising targeting moieties, methods for preparing the same, and intermediates useful in their preparation. In another aspect, the present invention provides formulations (e.g., pharmaceutical compositions) comprising the targetting moiety-containing conjugates and compounds. The present invention also provides methods for delivering agents (e.g., nucleic acids such as oligonucleotides or mRNAs) to a cell, methods for treating and/or preventing a disease or condition in a subject, and methods for modulating gene expression in a cell or a subject. Further, provided herein are kits comprising the conjugates, or formulations thereof; and kits for the preparation of conjugates described herein.
Total Synthesis of the Securinega Alkaloid (−)-Secu’amamine A
作者:Peng Liu、Sungwoo Hong、Steven M. Weinreb
DOI:10.1021/ja802700z
日期:2008.6.18
The first enantioselective total synthesis of the rearranged Securinega alkaloid (-)-secu'amamine A is reported starting from D-proline as the source of absolute chirality. The synthesis requires 15 steps starting from D-proline-derived N-trityl aldehyde 11 and proceeds in approximately 9% overall yield. Key steps include a stereoselective conjugate addition of pyrrolidino enedione 19 to afford indolizidine
据报道,以 D-脯氨酸作为绝对手性来源,首次对重排的 Securinega 生物碱 (-)-secu'amamine A 进行了对映选择性全合成。合成需要 15 个步骤,从 D-脯氨酸衍生的 N-三苯甲基醛 11 开始,并以大约 9% 的总产率进行。关键步骤包括吡咯烷烯二酮 19 的立体选择性共轭加成以提供作为主要产物的吲哚里西啶 24 和二酮酯 25 的环化/内酯化以产生四环 26。此外,对合成生物碱的 1H NMR NOE 研究和 X 射线分析已经确定吲哚里西啶部分是反式融合的。