On the AVANCE 500 MHz instrument (Bruker, Billerica, MA, USA), 1H and 13C/DEPT-NMR, two-dimensional homonuclear (i.e., COSY), and heteronuclear (i.e., HMQC and HMBC) analyses were carried out. Mass spectrometry was performed on a Waters ACQUITY H-Class UPLC system tandem a Waters Xevo TQ-S triple quadrupole time-of-flight mass spectrometer (Waters Corp., Milford, MA, USA).
Free full text: Click here