Structure elucidation and NMR assignments of a new dihydrochalcone from Empetrum nigrum subsp. asiaticum (Nakai ex H.Ito) Kuvaev

• Main Authors: Shuyin Bao, Qinghu Wang, Wenqiang Bao, Wuliji Ao
• Format: Text
• Language: unknown
• Published: Taylor & Francis 2018
• Subjects: Biophysics; Biochemistry; 29999 Physical Sciences not elsewhere classified; FOS Physical sciences; Genetics; FOS Biological sciences; 39999 Chemical Sciences not elsewhere classified; FOS Chemical sciences; Ecology; Sociology; FOS Sociology; 69999 Biological Sciences not elsewhere classified; 110309 Infectious Diseases; FOS Health sciences; Plant Biology; Empetrum nigrum
• Online Access: https://dx.doi.org/10.6084/m9.figshare.7506113.v1; https://tandf.figshare.com/articles/Structure_elucidation_and_NMR_assignments_of_a_new_dihydrochalcone_from_Empetrum_nigrum_subsp_asiaticum_Nakai_ex_H_Ito_Kuvaev/7506113/1

A new dihydrochalcone, namely 2',5'-dimethyl-3'-methoxy-4',6'-dihydroxyl-dihydrochalcone ( 1 ) together with five known compounds were isolated from the CHCl 3 extract from Empetrum nigrum L. var. japonicum K. Koch ( E. nigrum ). The structures of 1 was elucidated by spectroscopic methods, including UV, IR, HR-ESI-MS and extensive 1D and 2D NMR techniques.