| Identification | Back Directory | [Name]
PROTOVERATRINE B | [CAS]
124-97-0 | [Synonyms]
yrate)
veratetrin
neoprotoveratrin
PROTOVERATRINE B
NEOPROTOVERATRINE
PROTOVERATRINE B (RG)
PROTOVERATRINE A (RG)(CALL)
4-beta,6-alpha,7-alpha,14,15-alpha-16-beta,20-octol,4,9-epoxy-cevane-3-bet
6,7-diacetate3-(threo-(+)-2,3-dihydroxy-2-methylbutyrate)15-((-)-2-methylbut
4α,9-Epoxycevane-3β,4β,6α,7α,14,15α,16β,20-octol 6,7-diacetate 3-[(2R,3R)-2,3-dihydroxy-2-methylbutanoate]15-[(R)-2-methylbutanoate]
Cevane-3,4,6,7,14,15,16,20-octol, 4,9-epoxy-, 6,7-diacetate 3-[(2R,3R)-2,3-dihydroxy-2-methylbutanoate] 15-[(2R)-2-methylbutanoate], (3β,4α,6α,7α,15α,16β)-
[3beta(2R,3R),4alpha,6alpha,7alpha,15alpha(R),16beta]-4,9-epoxycevane-3,4,6,7,14,15,16,20-octol 6,7-diacetate 3-(2,3-dihydroxy-2-methylbutyrate) 15-(2-methylbutyrate) | [EINECS(EC#)]
204-719-2 | [Molecular Formula]
C41H63NO15 | [MDL Number]
MFCD00135925 | [MOL File]
124-97-0.mol | [Molecular Weight]
809.94 |
| Chemical Properties | Back Directory | [Melting point ]
268-270°C | [alpha ]
D25 -37° (pyridine); D25 -3.5° (chloroform) | [Boiling point ]
755.18°C (rough estimate) | [density ]
1.1826 (rough estimate) | [refractive index ]
1.6220 (estimate) | [storage temp. ]
2-8°C | [pka]
10.73±0.70(Predicted) |
| Safety Data | Back Directory | [Safety Statements ]
22-24/25 | [RIDADR ]
1544 | [WGK Germany ]
3 | [RTECS ]
FL5750000 | [HazardClass ]
6.1(a) | [PackingGroup ]
II | [Toxicity]
LD50 s.c. in male mice: 0.21 mg/kg (Tanaka) |
| Hazard Information | Back Directory | [Description]
Also present in Veratrum album, this closely allied alkaloid may be separated
from the preceding base by chromatography. It also yields colourless crystals
from EtOH and is laevorotatory with [α]29D&o - 39.8° (pyridine) or - 3.5° (CHCI3).
In this case, alkaline hydrolysis gives protoverine, two moles of acetic acid, one
mole of (-)-2-methylbutyric acid and one mole of 2: 3-dihydroxy-2-
methylbutyric acid. It may be distinguished from protoveratrine A by giving a
green colour with H2S04. It also forms a complex with maleic acid having m.p.
222.2°C; [α]29D&o - 27.3°. | [References]
Stoll, Seebeck., Helv. Chim. Acta., 36,718 (1953) |
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