Abstract
Procyanidins B2, B3, and B4 have been isolated fromJuniperus sabina for the first time. On the basis of chemical transformations and the PMR spectroscopy of their decaacetates, and absolute configurations of the asymmetric centers of each of the halves of the molecules of the dimer have been determined: 2R, 3R, 4R for the “upper” half and 2R, 3R for the “lower” half of B2, 2R, 3S, 4S for the “upper” half and 2R, 3S, for the “lower” half of B3; and 2R, 3S, 4S for the “upper” half and 2R, 3R for the “lower” half of B4.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
T. K. Chumbalov, L. T. Pashinina, and S. A. Abil'kaeva, Chemistry and Chemical Technology [in Russian], Alma-Ata (1978), p. 95.
L. T. Pashinina, T. K. Chumbalov, and S. A. Abil'kaeva, Khim. Prirodn. Soedin., 420 (1980).
K. Weinges, W. Kalterhauser, H.-D. Marx, E. Nader, J. Perner, and D. Seiler, Ann. Chem.,711, 184 (1968).
L. T. Pashinina, N. D. Storozhenko, T. K. Chumbalov, and V. I. Sheichenko, Khim. Prirodn. Soedin., 735 (1976).
L. T. Pashinina, T. K. Chumbalov, V. I. Sheichenko, and R. Zh. Shukenova, Khim. Prirodn. Soedin., 204 (1978).
E. Haslam, Flavanoids and Biflavanoids, Akademiai Kiado, Budapest (1977), p. 97.
Additional information
S. M. Kirov Kazakh State University, Alma-Ata. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 307–312, May–June, 1982.
Rights and permissions
About this article
Cite this article
Pashinina, L.T., Abil'kaeva, S.A. & Sheichenko, B.I. Dimeric flavanols ofJuniperus sabina. I. Chem Nat Compd 18, 282–287 (1982). https://doi.org/10.1007/BF00580451
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00580451