24-hydroxy vitamin D derivatives
First Claim
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1. A process for preparing vitamin D derivatives having the following formula:
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wherein R1, R2, R3, and R4, which may be the same or different, represent a hydrogen atom or a protecting group, comprising;
reacting a compound of formula (2) wherein R1 represents a hydrogen atom or a protecting group, with a compound having the formula (3) wherein R7 represents a hydrogen atom and R2, R3, and R4, which are the same or different, represent a hydrogen atom or a protecting group.
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Abstract
A process for preparing vitamin D derivatives having the following formula:
wherein R1, R2, R3, and R4, which may be the same or different, represent a hydrogen atom or a protecting group, comprising:
reacting a compound of formula (2)
wherein R1 represents a hydrogen atom or a protecting group, with a compound having the formula (3)
wherein R1 represents a hydrogen atom and R2, R3, and R4, which are the same or different, represent a hydrogen atom or a protecting group.
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Citations
2 Claims
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1. A process for preparing vitamin D derivatives having the following formula:
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wherein R1, R2, R3, and R4, which may be the same or different, represent a hydrogen atom or a protecting group, comprising;
reacting a compound of formula (2) wherein R1 represents a hydrogen atom or a protecting group, with a compound having the formula (3) wherein R7 represents a hydrogen atom and R2, R3, and R4, which are the same or different, represent a hydrogen atom or a protecting group.
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2. A compound of the formula (1):
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wherein R7 represents a hydrogen atom and R2, R1, and R4 represent a hydrogen atom or a protecting group.
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Specification