Commercial Manufacture of Halaven®: Chemoselective Transformations En Route to Structurally Complex Macrocyclic Ketones
摘要:
The evolution of the synthesis of Halaven (R) (E7389, INN eribulin mesylate) from a medicinal chemistry process to the execution of the final process on pilot scale is described. The completion of the synthesis of Halaven (R) from C1-C13 ester and C14-C35 sulfone alcohol involves a series of chemo-, regio-, and stereoselective transformations. Furthermore, a high-dilution macrocyclization presented a number of challenges for industrial-scale manufacture (throughput, processing time, and side reactions). This paper describes studies at Eisai leading to an understanding, optimization, and control of the chemistry that realized the reproducible commercial production of Halaven (R).
Synthesis of the C1–C13 fragment of eribulin mesylate has been accomplished. It features a highly stereoselective construction of a trans-dihydropyran framework using three key reactions: (1) Sharpless epoxidation, (2) regioselective ring opening, and (3) olefin metathesis.
作者:Wanjun Zheng、Boris M. Seletsky、Monica H. Palme、Paul J. Lydon、Lori A. Singer、Charles E. Chase、Charles A. Lemelin、Yongchun Shen、Heather Davis、Lynda Tremblay、Murray J. Towle、Kathleen A. Salvato、Bruce F. Wels、Kimberley K. Aalfs、Yoshito Kishi、Bruce A. Littlefield、Melvin J. Yu
DOI:10.1016/j.bmcl.2004.08.069
日期:2004.11
Structurally simplified macrocyclic ketone analogues of halichondrin B were prepared by total synthesis and found to retain the potent cell growth inhibitory activity in vitro, stability in mouse serum, and in vivo efficacy of the natural product. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of the C1–C13 Fragment of Eribulin on a Kilogram Scale
作者:Seong Taek Kim、Yongseo Park、Namhyeon Kim、Jaeun Gu、Wongyoung Son、Jisu Hur、KangHee Lee、Areum Baek、Ju Young Song、U Bin Kim、Kee-Young Lee、Chang-Young Oh、Seokhwi Park、Hyunik Shin