Ngày tải lên :
25/03/2014, 12:21
... R
1
=R
2
=R
3
=COCH
3
6,89 s 7, 17 d 7, 64 dd 7, 73 d
3. R
1
=R
2
=R
3
=CO(CH
2
)
2
CH
3
6,88 s 7, 16 d 7, 63 dd 7, 73 d
4. R
1
=R
2
=R
3
=CO(CH
2
)
3
CH
3
6,88 s 7, 16 d 7, 63 dd 7, 72 d
5. R
1
=R
2
=R
3
=CO(CH
2
)
4
CH
3
6,88 ... R
1
=R
2
=R
3
=CO(CH
2
)
4
CH
3
6,88 s 7, 16 d 7, 63 dd 7, 73 d
6. R
1
=R
2
=R
3
=COC
6
H
5
7, 02 s 7, 30 d 7, 72 dd 7, 80 d
7. R
1
=R
2
=R
3
=C
6
H
5
OCO 6, 97 s 7, 36 d 7, 66 dd 7, 78 d
8. R
1
=R
3
=(CH
3
)NCO; R
2
=OH 6 ,53 ... 6 ,53 s 7, 23 d 7, 66 dd 7, 75 d
9. R
1
=R
2
=R
3
=CH
3
6, 75 s 6,99 d 7, 71 dd 7, 70 d
10. R
1
=R
2
=R
3
=CH
2
C
6
H
5
6 ,73 s 7, 00 d 7, 63 dd 7, 74 d
11. R
1
=R
3
=
R
2
=OH
6 ,48 s 6,98 d 7, 71 dd 7, 68...