The compound of the formula (24):
1
wherein R
9
R
10
may be the same or different and each represent a hydrogen atom or a protecting group.
化学式(24)的化合物:其中R9和R10可以相同或不同,且均表示氢原子或保护基。
16-ene-vitamin D derivatives
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:US20020032340A1
公开(公告)日:2002-03-14
A compound having the formula (4):
wherein
1
X is oxygen or sulfur, R
9
and R
10
are each a hydrogen or a protecting group, and R
11
is an aliphatic hydrocarbon, a —COR
12
group where R
12
is alkyl, aryl or alkoxy, or a group of formula
2
wherein R
5
and R
6
are each hydrogen or hydroxyl, m is 1 to 4, and n is 0-2.