title: Isolation and structure elucidation of rebaudioside D2 from bioconversion reaction of rebaudioside A to rebaudioside D.
abstract: We report the isolation and complete structure of an isomer of rebaudioside D, known as rebaudioside D2. This novel steviol glycoside was isolated from a bioconversion reaction of rebaudioside A to rebaudioside D. Rebaudioside D2 possesses a relatively rare 1 --> 6 sugar linkage, which was discovered by extensive analysis of NMR (1H, 13C, COSY, HSQC-DEPT, HMBC, 1D TOCSY and NOESY) and mass spectral data.
authors.forename: Indra
authors.initials: I
authors.lastname: Prakash
authors.forename: Cynthia
authors.initials: C
authors.lastname: Bunders
authors.forename: Krishna P
authors.initials: KP
authors.lastname: Devkota
authors.forename: Romila D
authors.initials: RD
authors.lastname: Charan
authors.forename: Catherine
authors.initials: C
authors.lastname: Ramirez
authors.forename: Maunik
authors.initials: M
authors.lastname: Parikh
authors.forename: Avetik
authors.initials: A
authors.lastname: Markosyan
mesh_terms: D045786:Diterpenes, Kaurane / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D036625:Stevia / Q000737:chemistry*
chemical_list: D045786:Diterpenes, Kaurane; D006027:Glycosides; D010936:Plant Extracts; C586824:rebaudioside D; C025474:rebaudioside A