Conformationally rigid aromatic amino acids as potential building blocks for abiotic foldamers
作者:Veera V. E. Ramesh、Arup Roy、Kuruppanthara N. Vijayadas、Amol M. Kendhale、Panchami Prabhakaran、Rajesh Gonnade、Vedavati G. Puranik、Gangadhar J. Sanjayan
DOI:10.1039/c0ob00593b
日期:——
This communication describes the development of conformationally constrained unnatural aromatic amino acids, constructed on rigid backbone wherein the carboxyl and amino groups project in two dimensions (planes) on the aromatic framework. Such a feature offers the possibility of design and development of conformationally ordered synthetic oligomers with intriguing structural architectures distinct from those classically observed. Furthermore, such amino acids will have the potential to extend the conformational space available for foldamer design with diverse backbone conformation and structural architectures.
Sterically controlled naphthalene homo-oligoamides with novel structural architectures
作者:Panchami Prabhakaran、Vedavati G. Puranik、Jima N. Chandran、P. R. Rajamohanan、Hans-Jörg Hofmann、Gangadhar J. Sanjayan
DOI:10.1039/b822076j
日期:——
Herein we report novel naphthalene homo-oligoamides, derived from 4-amino-3-methoxy-naphthalene-2-carboxylic acid and 4-amino-1-methoxy-naphthalene-2-carboxylic acid as monomer building blocks, that display an anti-periplanar arrangement of the naphthyl rings, primarily induced by steric interactions between adjacent groups and functionalities.
Synthesis of Naphtho-[2,3]-furan derivatives for investigative insights into solvatochromic behaviour
作者:Sonia Ali、Khushwinder Kaur、Jyoti Agarwal
DOI:10.1016/j.molliq.2023.121256
日期:2023.3
naphtho-[2], [3]-furan derivatives (viz. a viz. naphtho-[2], [3]-furan-3-yl acetate (NF), 9-nitronaphtho-[2], [3]-furan-3-yl acetate (NNF) and 9-bromonaphtho-[2,3-]-furan-3-yl acetate (BNF)) using a multistep approach. The products were obtained in high yields and characterized by FT-IR, 1H NMR, 13C NMR, and HRMS spectroscopy. The absorption and fluorescence spectra of these derivatives were recorded in