Pictet–Spengler condensations using 4-(2-aminoethyl)coumarins
作者:Vitaliy M. Sviripa、Michael V. Fiandalo、Kristin L. Begley、Przemyslaw Wyrebek、Liliia M. Kril、Andrii G. Balia、Sean R. Parkin、Vivekanandan Subramanian、Xi Chen、Alexander H. Williams、Chang-Guo Zhan、Chunming Liu、James L. Mohler、David S. Watt
DOI:10.1039/d0nj02664f
日期:——
of the Pictet–Spengler condensation to substituted 4-(2-aminoethyl)coumarins and 5α-androstane-3-ones furnished spirocyclic, fluorescent androgens at the desired C-3 position. Condensations required the presence of activating C-7 amino or N,N-dialkylamino groups in the 4-(2-aminoethyl)coumarin component of these condensation reactions. Successful Pictet–Spengler condensation, for example, of DHT with
雄激素剥夺疗法 (ADT) 只是一种姑息措施,前列腺癌总是以致命的去势抵抗形式 (CRPC) 复发。前列腺癌通过将弱的肾上腺雄激素代谢为促进生长的 5α-二氢睾酮 (DHT),雄激素受体 (AR) 的首选配体来抵抗 ADT。开发利用 17-氧化还原酶的雄激素代谢途径的最后步骤的小分子抑制剂需要在 C-3 处具有荧光基团并在 C-17 处具有完整、天然存在的功能的探针。将 Pictet-Spengler 缩合应用于取代的 4-(2-氨基乙基)香豆素和 5α-雄甾烷-3-酮在所需的 C-3 位置提供螺环荧光雄激素。缩合需要存在活化的 C-7 氨基或N , N这些缩合反应的 4-(2-氨基乙基)香豆素组分中的 -二烷基氨基。例如,DHT 与 9-(2-aminoethyl)-2,3,6,7-tetrahydro-1 H ,5 H ,11 H -pyrano[2,3- f ] pyrido [3]成功的
Orthogonally Protected Thiazole and Isoxazole Diamino Acids: An Efficient Synthetic Route
作者:Jeffrey D. Butler、Keith C. Coffman、Kristin T. Ziebart、Michael D. Toney、Mark J. Kurth
DOI:10.1002/chem.201001492
日期:——
An efficient strategy has been developed for the synthesis of heteroaromatic amino acids (HAAs). These methods generate mono‐ or orthogonally protected diamino acidsfrom β‐amino acids (see scheme). Their synthetic reliability and biological potential was demonstrated through the synthesis of an anthranilate synthase (AS) and isochorismate synthase (IS) inhibitor with improved potency.
[EN] COUMARIN-MODIFIED ANDROGENS FOR THE TREATMENT OF PROSTATE CANCER<br/>[FR] ANDROGÈNES À COUMARINE MODIFIÉE POUR LE TRAITEMENT DU CANCER DE LA PROSTATE
申请人:HEALTH RESEARCH INC
公开号:WO2020223174A1
公开(公告)日:2020-11-05
Provided are androstane and dihydrotestosterone compounds functionalized with carbocyclic groups or heterocyclic groups that may be saturated or unsaturated. The compounds may be used in methods of inhibiting cell growth of malignant cells and/or hyperplastic cells and/or treating individuals having diseases associated with malignant cell growth (e.g., cancer, such as, for example, prostate cancer) and/or hyperplastic cell growth and/or molecular imaging of malignant cells and/or hyperplastic cells and/or inducing degradation of a target protein. Also provided are compositions.
TRIPARTITE OLIGONUCLEOTIDE COMPLEXES AND METHODS FOR GENE SILENCING BY RNA INTERFERENCE
申请人:Yamada Christina
公开号:US20100093085A1
公开(公告)日:2010-04-15
Provided herein are tripartite oligonucleotide complexes which can be administered to a cell, tissue or organism to silence a target gene. The tripartite oligonucleotide complexes of the disclosure may include a conjugate moiety that facilitates delivery to a cell, tissue or organism without the aid of a transfection reagent
Duplex Oligonucleotide Complexes and Methods for Gene Silencing by RNA Interference
申请人:Yamada Christina
公开号:US20120322855A1
公开(公告)日:2012-12-20
Provided herein are duplex oligonucleotide complexes which can be administered to a cell, tissue or organism to silence a target gene without the aid of a transfection reagent(s). The duplex oligonucleotide complexes of the disclosure include a conjugate moiety that facilitates delivery to a cell, tissue or organism.