+++2 статьи Tetrahedron, Tetrahedr. lett.

[andrex]

Fluorine containing amino acids and their derivatives. 7. Synthesis and antitumor activity of α- and γ-substituted methotrexate analogs
Tetrahedron, Volume 44, Issue 17, 1988, Pages 5375-5387
Tadahiko Tsushima, , Kenji Kawada, Shoichi Ishihara, Naomi Uchida, Osamu Shiratori, Junko Higaki and Masaharu Hirata

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http://dx.doi.org/10.1016/S0040-4020(01)86044-0

Determination of the relative and absolute stereochemistry of sphingofungins A, B, C, and D
Tetrahedron Letters, Volume 33, Issue 3, 14 January 1992, Pages 297-300
Frank VanMiddlesworth, , Claude Dufresne, Francine E. Wincott, Ralph T. Mosley and Kenneth E. Wilson

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http://dx.doi.org/10.1016/S0040-4039(00)74115-3

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[Arminum]

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[andrex]

Arminum, спасибо