@article{oai:kanazawa-u.repo.nii.ac.jp:00014758,
 author = {Fujii, Tozo and Ohba, Masashi and Kawamura, Hitoshi and Nakashio, Yoshiyuki and Honda, Kei and Matsubara, Satoshi},
 issue = {5},
 journal = {Chemical & pharmaceutical bulletin},
 month = {May},
 note = {Both enantiomers [(1'R)-6 and (1'S)-6] of N6-(1,3-dimethyl-2- butenyl)adenine and their 9-β-D-ribofuranosides [(1''R)-16 and (1''S)-16] have been synthesized for the first time from both enantiomers of alanine (15) in nine steps. These aglycones and nucleosides, together with N6-(3- methyl-2-butenyl)adenine (5) and its 9-β-D-ribofuranoside (18) as well as 9- β-D-ribofuranosyl-cis-zeatin (20) and 9-(2-deoxy-β-D-ribofuranosyl)-cis- zeatin (19), were tested for cytokinin activity in the tobacco callus bioassay. The order of their activity was 5> (1'R)-6 > (1''R)-16≃18>(1'S)- 6>(1''S)-16>20>19. The bioassay results are compared with those obtained previously for the derivatives modified analogously in the N6-substituent in the cis- and trans-zeatin series.},
 pages = {1045--1049},
 title = {Purines. LXII. Both Enantiomers of N^6-(1,3-Dimetyl-2-butenyl)adenine and Their 9-β-D-Ribofuranosides : Synthesis and Cytokinin Activity},
 volume = {42},
 year = {1994}
}