Some Synthetic Modifications Employing 6,9-dihydroxy-7a,14a-dihydronaphthofuranofuro [2,1-b]naphthofuran
Abstract
Naphthofurans and benzofurans are used in drugs because of their biological activity, molecular electronic components, and functional polymers. Moreover, this type of compounds are used to behave as bactericides and fungucides. The aim of this study was to synthesize 6,9-dihydroxymethyl-7a,14c-dihydronaphthofuranofuro-[2,1-b]naphthofuran. So far, in the literature, only ester- and acid-functionalized naphthofuranofurans were observed to use as ligands. With the synthesis of 6,9-dihydroxymethyl-7a,14c-dihydronaphthofuranofuro-[2,1-b]naphthofuran, we aimed to increase the ligand activity of the compound. Therefore, our first step was to obtain 6,9-dihydroxy-7a,14c-dihydronaphthofuranofuro-[2,1-b]naphthofuran. Practical yield was 72.6%. Its melting point was 220 – 222 0C. The subsequent step was about synthesizing 6,9-dicarboxy-7a,14c-dihydronaphthofuranofuro-[2,1-b] from 2,3-dihydroxynaphthalene. After obtaining the naphthofuran with 60% yield, we reduced the compound with LiAlH4to yield 6,9-dihydroxymethyl-7a,14c-dihydronaphthofuranofuro-[2,1-b]naphthofuran with limited success due to the insolubility of the compound, and attempts to elucidate the structure of the compound were not successful. As an alternative, we tried the same reaction with the corresponding ester of the compound. To do this, we first synthesized the methyl ester of 3-hydroxy-2-naphthoic acid. This compound was further reacted with glyoxal bisulfite to convert to the ester-functionalized naphthofuranofuran compound. Later, we reduced the ring containing the ester functionality and used column chromatography to purify the compound. As a result, we have achieved to obtain the naphthofuranofuran structure having benzylic alcohol functionality. Isolation of the structure, however, is not easy due to the problems with solubility. We are planning to solve this problem by starting from a naphthyl compound having long alkyl chains.
Keywords
Details
Primary Language
English
Subjects
Electrochemistry
Journal Section
Research Article
Authors
Sevil Çimir
This is me
Publication Date
October 8, 2014
Submission Date
October 8, 2014
Acceptance Date
-
Published in Issue
Year 2014 Volume: 1 Number: 1
Cited By
Assessment of blue crab Shell ( Callinectes sapidus ) particles as bio‐based filler to EPDM rubber
Journal of Applied Polymer Science
https://doi.org/10.1002/app.51540
