A process for producing a butanetriol derivative represented by formula (1) useful as a material for medicines, characterized by reacting a compound represented by formula (3), wherein R1 and R2 represent different protecting groups, with an ethylene glycol derivative under basic conditions to obtain a compound represented by formula (4) or (4a) and selectively removing one or two protecting group from this compound.
A process for preparing a butanetriol derivative of the formula (1) useful as intermediates of medicines
wherein R1 is the same defined below, which comprises reacting a compound of the formula (3)
wherein R1 and R2 are the different protecting groups, and an ethylene glycol derivative in a basic condition to prepare a compound of the formula (4) or (4a)
wherein R1 and R2 are the same defined above, and then subjecting the compound (4) or (4a) to selective deprotection reaction.
A process for preparing a butanetriol derivative of the formula (1) useful as intermediates of medicines
1
wherein R
1
is the same defined below, which comprises reacting a compound of the formula (3)
2
wherein R
1
and R
2
are the different protecting groups, and an ethylene glycol derivative in a basic condition to prepare a compound of the formula (4) or (4
a
)
3
wherein R
1
and R
2
are the same defined above, and then subjecting the compound (4) or (4
a
) to selective deprotection reaction.