The First Total Synthesis of Racemic Hydroxymoloka’iamine
作者:Nisar Ullah
DOI:10.1515/znb-2009-0719
日期:2009.7.1
The first total synthesis of racemic hydroxymoloka’iamine, a new brominated metabolite isolated from Red Sea sponge Pseudoceratna arabica, was achieved in a high-yield reaction sequence.
Design, Synthesis, and Preliminary Studies of Spiro-isoxazoline-peroxides against Human Cytomegalovirus and Glioblastoma
作者:Prasanta Das、Mohammad H. Hasan、Dipanwita Mitra、Ratna Bollavarapu、Edward J. Valente、Ritesh Tandon、Drazen Raucher、Ashton T. Hamme
DOI:10.1021/acs.joc.9b00746
日期:2019.6.7
The association between glioblastoma (GBM) and human cytomegalovirus (HCMV) infection has been the intensely debated topic over the decades for developing new therapeutic options. In this regard, the peroxides from natural and synthetic sources served as potential antiviral and anticancer agents in the past. Herein, a concise and efficient strategy has been demonstrated to access a novel class of peroxides containing a spiro-isoxazoline to primarily investigate the biological activities. The synthetic compounds were evaluated for in vitro antiviral and antiproliferative activity against HCMV and glioblastoma cell line (GBM6), respectively. While compound 13m showed moderate anti-CMV activity (IC50 = 19 mu M), surprisingly, an independent biological assay for compound 13m revealed its antiproliferative activity against the human glioblastoma cell line (GBM6) with an IC50 of 10 mu M. Hence, the unification of an isoxazoline and peroxide heterocycles could be a potential direction to initiate the HCMV-GBM drug discovery program.
Structure of the psammaplysins
作者:Deborah M. Roll、Clifford W. J. Chang、Paul J. Scheuer、George A. Gray、James N. Shoolery、Gayle K. Matsumoto、Gregory D. Van Duyne、Jon Clardy
DOI:10.1021/ja00296a014
日期:1985.5
Divergent and Concise Syntheses of Spiroisoxazolines: First Total Synthesis of 11-Deoxyfistularin-3
作者:Prasanta Das、Ashton T. Hamme II
DOI:10.1002/ejoc.201500603
日期:2015.8
A divergent and concise base-promoted Dieckmann-type keto-ester condensation strategy is demonstrated to generate two unique spiro[cyclohexadiene-isoxazoline] moieties. The consecutive di-bromination–elimination–bromination of the corresponding spiro moiety has been successfully utilized to furnish the desired core structure of many bromotyrosine derived spiroisoxazoline natural products. The spiroisoxazoline