Synthetic process for preparation of macrocyclic C1-keto analogs of halichondrin B and intermediates useful therein
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United States of America Patent
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Mar 8, 2016
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app pub date -
Mar 28, 2013
filing date -
Mar 30, 2012
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Abstract
Disclosed is a compound of formula 1, or a pharmaceutically acceptable salt thereof, where R1, R2, R3, R4, R5, R6, R7, R7′, R8, R9, R10, R11, R12 and R13 are as disclosed herein. Also, disclosed is a process for the preparation of the compound of formula 1, or a pharmaceutically acceptable salt thereof, and intermediates used therein. The compound of formula 1 can be used in the preparation of halichondrin analogs, such as Eribulin; and a process for its preparation from the compound of formula 1 is also disclosed.
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