5α-Hydroxy-2α,10β-diacetoxy-4(20),11-taxadiene

5α-Hydroxy-2α,10β-diacetoxy-4(20),11-taxadiene

Common Name: 5α-Hydroxy-2α,10β-diacetoxy-4(20),11-taxadiene

Synonyms: 2α,10β-Diacetoxy-5α-hydroxytaxa-4(20),11(12)-diene

CAS Registry Number: 464169-56-0

InChI: InChI=1S/C24H36O5/c1-13-8-9-17-22(29-16(4)26)21-14(2)18(27)10-11-24(21,7)12-19(28-15(3)25)20(13)23(17,5)6/h17-19,21-22,27H,2,8-12H2,1,3-7H3/t17-,18-,19-,21-,22+,24-/m0/s1

InChIKey: InChIKey=NLBZBKRWTPENNJ-BVWKLLKYSA-N

Formula: C24H36O5

Molecular Weight: 404.54

Exact Mass: 404.256275

NMR Solvent: CDCl3

MHz: 500.0

Calibration: TMS

NMR references: Zhang, M., Yin, D., Guo, J.-Y., and Liang, X.-T. (2005). Synthesis of 7,9-dideoxybaccatin IV analogs from sinenxan A. Tetrahedron 61, 5519–5527.

Species: Taxus

Notes: Relative stereochemistry not reported in literature. Multiplets in literature reported as ppm ranges we report at center of peak. Overlap between acetate signals and methyl at position 18 poorly noted in literature.

Proton NMR Peaks

Position PPM Peak Type J (Hz)
1 1.72 m
2 5.38 d 6
3 3.35 d 6
5 4.2 br s
6 1.72 m
7 2.12 m
7 1.67 m
9 1.59 dd 15, 5.5
10 6.11 dd 12, 5.5
13 2.12 m
14 1.72 m
14 1.9 m
16 1.6 s
17 1.06 s
18 2.05 s
19 0.83 s
20 5.1 s
20 4.8 s
OAc 2.05 s
OAc 2.05 s