2-((2S,3S,4R,5R)-5-((S)-3-AMINO-2-HYDROXYPROP-1-YL)-4-METHOXY-3-(PHENYLSULFONYLMETHYL)TETRAHYDROFURAN-2-YL)ACETALDEHYDE DERIVATIVES AND PROCESS FOR THEIR PREPARATION
Disclosed is a compound of formula 1, as shown below, where R1, R2, R3, R4, R5, R6 and R7 are as described herein. Also, disclosed is a process for the preparation of compounds of formula 1, and intermediates used therein. The compound of formula 1 can be useful for preparation of halichondrin analogs such as Eribulin.