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A. Miah Jal, T. Hudlicky, and J. W. Reed, In The Alkaloids, ed. by F. M. Manske, Academic Press, New York, 1998, Vol. 51, pp. 199-269.","key":"#cr-split#-10.3987\/COM-05-S(K)3-1.1"},{"doi-asserted-by":"crossref","unstructured":"For an hemisynthesis of enantiopure homoharringtonine, see: (b) J.-P. Robin, R. Dhal, G. Dujardin, L. Girodier, L. Mevellec, and S. Poutot, Tetrahedron Lett., 1999, 40, 2931.","key":"#cr-split#-10.3987\/COM-05-S(K)3-1.2","DOI":"10.1016\/S0040-4039(99)00327-5"},{"doi-asserted-by":"crossref","unstructured":"For an enantioselective synthesis of the ester side-chain of homoharringtonine, see: (c) L. Keller, F. Dumas, and J. d\u2019Angelo, Eur. J. Org. Chem., 2003, 2488.","key":"#cr-split#-10.3987\/COM-05-S(K)3-1.3","DOI":"10.1002\/ejoc.200300111"},{"doi-asserted-by":"crossref","unstructured":"2. For a recent contribution in this area, see: M. Pizzonero, L. Keller, F. Dumas, M. Ourevitch, G. Morgant, A. Spasojevic-de Bir\u00e9, G. Bogdanovic, N. E. Ghermani, and J. d\u2019Angelo, J. Org. Chem., 2004, 69, 4336.","key":"10.3987\/COM-05-S(K)3-2","DOI":"10.1021\/jo049681x"},{"doi-asserted-by":"crossref","unstructured":"3. Total syntheses of (\u00b1)-cephalotaxine: W.-D. Z. Li and Y.-Q. Wang, Org. Lett., 2003, 5, 2931 and references cited. (b) Recent formal synthesis of (\u00b1)-cephalotaxine: W.-D. Z. Li and B.-C. Ma, J. Org. Chem., 2005; 70, 3277.","key":"10.3987\/COM-05-S(K)3-3","DOI":"10.1021\/ol035098b"},{"doi-asserted-by":"crossref","unstructured":"(a) K. L. Mikolajczak, C. R. Smith Jr., and D. Weisleder, J. Med. Chem., 1977, 20, 328.","key":"#cr-split#-10.3987\/COM-05-S(K)3-4.1","DOI":"10.1021\/jm00213a002"},{"unstructured":"(b) J.-P. Robin, R. Dhal, F. Drouye, J.-P. Marie, N. Radosevic, J. Robin, K. Souchaud, and P. Bataille, U.S. Patent 6 579 869, 2003 (Chem. Abstr., 2004, 140, 94179).","key":"#cr-split#-10.3987\/COM-05-S(K)3-4.2"},{"doi-asserted-by":"crossref","unstructured":"(a) N. Isono and M. Mori, J. Org. 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