(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one

CAS No.
10214-55-8
Chemical Name:
(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one
Synonyms
Linearisine;(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one;Spiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one, 2',3',8',8'a-tetrahydro-5'-hydroxy-6'-methoxy-1'-methyl-, (1S,8'aS)-
CBNumber:
CB22399041
Molecular Formula:
C18H21NO3
Molecular Weight:
299.36
MDL Number:
MOL File:
10214-55-8.mol
Last updated:2023-07-14 17:45:19

(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one Properties

Melting point 219-222°C
Boiling point 444.6±45.0 °C(Predicted)
Density 1.30±0.1 g/cm3(Predicted)
pka 9.87±0.20(Predicted)

(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one Chemical Properties,Uses,Production

Description

The empirical formula for this alkaloid from Croton linearis Jacq. was originally given as C 1 7H 1903N, representing it as a dihydrocrotonosine. This was later altered to that given above when it was shown that a methylimino group is present. The structure has now been confirmed as dihydro-N-methylcrotonosine. When crystallized from EtOH it forms anisotropic columns. The ultraviolet spectrum shows three absorption maxima at 228, 282 and 288 ffi/J. and the specific rotation in [o:Jf>8 + 116° (c 0.83, MeOH). The hydrochloride also forms colourless columnar crystals which decompose, without melting, above 300°C. One phenolic hydroxyl group is present and on methylation, the alkaloid yields Amuronine (q.v.).

References

Haynes, Stuart.,J. Chem. Soc., 1784, 1789 (1963)
Haynes etaZ., Proc. Chem. Soc., 261 (1964)
Haynes et aZ., J. Chem. Soc., C, 1676 (1966)
Structure:
Snatzke, Wollenberg.,J. Chem. Soc., C, 1681 (1966)

(1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one Preparation Products And Raw materials

Raw materials

Preparation Products

Linearisine (1S)-2',3',8',8'aβ-Tetrahydro-5'-hydroxy-6'-methoxy-1'-methylspiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one Spiro[2-cyclohexene-1,7'(1'H)-cyclopent[ij]isoquinolin]-4-one, 2',3',8',8'a-tetrahydro-5'-hydroxy-6'-methoxy-1'-methyl-, (1S,8'aS)- 10214-55-8