18,19-Isopropylidenedioxy-17-oxo-ent-labd-13-en-16,15-olactone

18,19-Isopropylidenedioxy-17-oxo-ent-labd-13-en-16,15-olactone

Common Name: 18,19-Isopropylidenedioxy-17-oxo-ent-labd-13-en-16,15-olactone

Synonyms:

CAS Registry Number:

InChI: InChI=1S/C23H34O5/c1-21(2)27-14-23(15-28-21)11-4-10-22(3)18(17(13-24)6-8-19(22)23)7-5-16-9-12-26-20(16)25/h9,13,17-19H,4-8,10-12,14-15H2,1-3H3/t17-,18-,19+,22+/m1/s1

InChIKey: InChIKey=HHISJKOJXMXVFJ-IWQHBPENSA-N

Formula: C23H34O5

Molecular Weight: 390.513936

Exact Mass: 390.240624

NMR Solvent: CDDl3 + DMSO-d6

MHz:

Calibration:

NMR references: 13C - Joshi, B.S., Hegde, V.R., Kamat, V.N. Phytochemistry (1996) 42, 761-6

Species:

Notes: Family : Terpenoids, Type : Diterpenoids, Group : Labdanes; 13 C Spectrum from Naproc 13: José Luis López-Pérez, Roberto Therón, Esther del Olmo, David Díaz: NAPROC-13: a database for the dereplication of natural product mixtures in bioassay-guided protocols. Bioinformatics 23(23):3256-3257 (2007)

Carbon NMR Peaks

Position PPM
1 (CH2) 38.1
2 (CH2) 17.4
3 (CH2) 33.6
4 (C) 37.8
5 (CH) 52.8
6 (CH2) 26.5
7 (CH2) 37.5
8 (CH) 53.2
9 (CH) 49.2
10 (C) 38.1
11 (CH2) 20.3
12 (CH2) 26.9
13 (C) 132.9
14 (CH) 145
15 (CH2) 70.4
16 (C) 173.6
17 (CH) 204.1
18 (CH2) 61.5
19 (CH2) 70
20 (CH3) 14.3
21 (C) 98.3
22 (CH3) 21.7
23 (CH3) 26