Conformations of Alanine-Based Peptides in Water Probed by FTIR, Raman, Vibrational Circular Dichroism, Electronic Circular Dichroism, and NMR Spectroscopy†

Biochemistry ◽  
2007 ◽  
Vol 46 (6) ◽  
pp. 1587-1596 ◽  
Author(s):  
Reinhard Schweitzer-Stenner ◽  
Thomas Measey ◽  
Lazaros Kakalis ◽  
Frank Jordan ◽  
Silvia Pizzanelli ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Nmr Spectroscopy ◽  
Vibrational Circular Dichroism ◽  
Electronic Circular Dichroism ◽  
Circular Dichroïsm

Conformational Analysis of XA and AX Dipeptides in Water by Electronic Circular Dichroism and1H NMR Spectroscopy

2006 ◽  
Vol 110 (13) ◽  
pp. 6979-6986 ◽  
Author(s):  
Andrew Hagarman ◽  
Thomas Measey ◽  
Ravi S. Doddasomayajula ◽  
Isabelle Dragomir ◽  
Fatma Eker ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Nmr Spectroscopy ◽  
Conformational Analysis ◽  
Electronic Circular Dichroism ◽  
Circular Dichroïsm

scholarly journals A Novel Azaphilone Muyophilone A From the Endophytic Fungus Muyocopron laterale 0307-2

2021 ◽  
Vol 9 ◽  
Author(s):  
Chao Yuan ◽  
Yuhua Guo ◽  
Ke Wang ◽  
Zhunian Wang ◽  
Longfei Li ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Endophytic Fungus ◽  
Vibrational Circular Dichroism ◽  
Spectroscopic Methods ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spectroscopic Analyses ◽  
Circular Dichroïsm

Two known azaphilone derivatives, 4,6-dimethylcurvulinic acid (1) and austdiol (2), and their novel heterotrimer, muyophilone A (3), were isolated and identified from an endophytic fungus, Muyocopron laterale 0307-2. Their structures and stereochemistry were established by extensive spectroscopic analyses including HRMS, NMR spectroscopy, electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) spectroscopic methods, as well as single crystal X-ray diffraction. In the structure of 3, two compound 2-derived azaphilone units were connected through an unprecedented five-membered carbon bridge which was proposed to be originated from compound 1. Compound 3 represents the first example of azaphilone heterotrimers.

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