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2D Structure
Also known as: 7-angelyleuropine, (-)-lasiocarpine, 303-34-4, Europine 7-angelate, Nsc-30625, Nci-c01478
Molecular Formula
C21H33NO7
Molecular Weight
411.5  g/mol
InChI Key
QHOZSLCIKHUPSU-LPLKQDONSA-N
FDA UNII
S770100Q96

(1S,7aR)-7-({[(2R)-2,3-dihydroxy-2-[(1S)-1-methoxyethyl]-3-methylbutanoyl]oxy}methyl)-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl (2Z)-2-methylbut-2-enoate is a natural product found in Heliotropium arbainense, Heliotropium suaveolens, and other organisms with data available.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
[(7S,8R)-7-[(Z)-2-methylbut-2-enoyl]oxy-5,6,7,8-tetrahydro-3H-pyrrolizin-1-yl]methyl (2R)-2,3-dihydroxy-2-[(1S)-1-methoxyethyl]-3-methylbutanoate
2.1.2 InChI
InChI=1S/C21H33NO7/c1-7-13(2)18(23)29-16-9-11-22-10-8-15(17(16)22)12-28-19(24)21(26,14(3)27-6)20(4,5)25/h7-8,14,16-17,25-26H,9-12H2,1-6H3/b13-7-/t14-,16-,17+,21-/m0/s1
2.1.3 InChI Key
QHOZSLCIKHUPSU-LPLKQDONSA-N
2.1.4 Canonical SMILES
CC=C(C)C(=O)OC1CCN2C1C(=CC2)COC(=O)C(C(C)OC)(C(C)(C)O)O
2.1.5 Isomeric SMILES
C/C=C(/C)\C(=O)O[C@H]1CCN2[C@@H]1C(=CC2)COC(=O)[C@@]([C@H](C)OC)(C(C)(C)O)O
2.2 Other Identifiers
2.2.1 UNII
S770100Q96
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Lasiocarpine Hydrochloride, (1s-(1alpha(z),7(2s*,3r*),7aalpha))-isomer

2. Lasiocarpine Sulfate, (1s-(1alpha(z),7(2s*,3r*),7aalpha))-isomer

2.3.2 Depositor-Supplied Synonyms

1. 7-angelyleuropine

2. (-)-lasiocarpine

3. 303-34-4

4. Europine 7-angelate

5. Nsc-30625

6. Nci-c01478

7. S770100q96

8. Rcra Waste Number U143

9. Mls002639334

10. Heliotridine Ester With Lasiocarpum And Angelic Acid

11. Ccris 355

12. Nsc30625

13. C21h33no7

14. Hsdb 6062

15. Unii-s770100q96

16. Nsc 30625

17. Heliotridine Ester With Lasiocarpum & Angelic Acid

18. Ai3-51770

19. Lasiocarpine [mi]

20. Lasiocarpine, Hplc Grade

21. Rcra Waste No. U143

22. Lasiocarpine [hsdb]

23. Lasiocarpine [iarc]

24. Schembl168932

25. Chembl1999554

26. Mfcd31631257

27. Zinc61997632

28. Heliosupine Methyl Ether [mi]

29. Akos030501885

30. (z)-2-methylcrotonic Acid, 2,3-dihydroxy-2-(1-methoxyethyl)-3-methylbutyrate (ester)

31. (7alpha-angelyloxy-5,6,7,8alpha-tetrahydro-3h-pyrrolizin-1-yl)methyl-2,3-dihydroxy-2-(1'-methoxyethyl)-3-methylbutyrate

32. 2,3,5,7alphabeta-tetrahydro-1-hydroxy-1h-pyrrolizine-7-methanol-1-angelate-7-(2,3-dihydroxy-2(1-methoxyethyl))-3-methyl-butyrate

33. 2-butenoic Acid, 2-methyl-, 7-((2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy)methyl)-2,3,5,7a-tetrahydro-1h-pyrrolizin-1-yl Ester, (1s-(1alpha(z),7(2s*,3r*),7aalpha))-

34. Wln: T55 An Cutj D1ovxqxq1 & 1 & Y1 & O1 Fovy1 & U2

35. (1s,7ar)-7-((((r)-2,3-dihydroxy-2-((s)-1-methoxyethyl)-3-methylbutanoyl)oxy)methyl)-2,3,5,7a-tetrahydro-1h-pyrrolizin-1-yl (z)-2-methylbut-2-enoate

36. 2-butenoic Acid, 2-methy-,(1s,7ar)-7-(((2r)-2,3-dihydroxy-2-((1s)-1-methoxyethyl)-3-methyl-1-oxobutoxy)methyl)-2,3,5,7a-tetrahydro-1h-ester, (2z)-

37. 2-butenoic Acid, 2-methyl-, 7-((2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy)methyl)-2,3,5,7a-tetrahydro-1h-pyrrolizin-1-yl Ester, (1s-(1.alpha.(z),7(s*(r*)),7a.alpha.))-

38. 2-butenoic Acid, 2-methyl-, 7-((2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy)methyl)-2,3,5,7a-tetrahydro-1h-pyrrolizin-1-yl Ester, (1s-(1alpha(z),7(2s*,3r*),7a Alpha))-

39. 2-butenoic Acid, 7-[[2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy]methyl]-2,3,5,7a-tetrahydro-1h-pyrrolizin-1-yl Ester, [1s-[1.alpha.(z),7(2s*,3r*),7a.alpha.]]-

2.4 Create Date
2005-06-24
3 Chemical and Physical Properties
Molecular Weight 411.5 g/mol
Molecular Formula C21H33NO7
XLogP30.5
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count8
Rotatable Bond Count10
Exact Mass411.22570239 g/mol
Monoisotopic Mass411.22570239 g/mol
Topological Polar Surface Area106 Ų
Heavy Atom Count29
Formal Charge0
Complexity699
Isotope Atom Count0
Defined Atom Stereocenter Count4
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count1
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Pharmacology and Biochemistry
4.1 Absorption, Distribution and Excretion

LASROCARPINE (RANDOMLY LABELLED, 44% IN THE AMINO ALCOHOL) WAS ADMIN IP TO RATS (TOTAL DOSE, 5 MG) DISTRIBUTION OF LABEL AFTER 4 HR WAS AS FOLLOWS: CARCASS, 6.4%; INTESTINES, 8.6%; TESTES, 0.1%; LUNG, 0.05%; KIDNEY, 0.26%; HEART, 0.05%; SPLEEN, 0.01%; BRAIN, 0.03%; URINE, 27.2%; LIVER, 2.8%, EXPIRED CO2, 9.3% FRACTIONATION OF LIVER RESULTED IN 1.73% IN A TRICHLOROACETIC ACID EXTRACT, 0.6% IN PROTEIN, 0.48% IN LIPID & 0.005% IN NUCLEIC ACIDS.

IARC. Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Geneva: World Health Organization, International Agency for Research on Cancer, 1972-PRESENT. (Multivolume work). Available at: https://monographs.iarc.fr/ENG/Classification/index.php, p. V10 285 (1976)


4.2 Metabolism/Metabolites

STUDIES WITH LASIOCARPINE HAVE CONFIRMED THE FORMATION OF PYRROLIC METABOLITES BY THE MIXED-FUNCTION OXIDASE SYSTEM OF THE MICROSOMAL FRACTION OF RAT LIVER. DEHYDROHELIOTRIDINE HAS BEEN ISOLATED & IDENTIFIED AS A PRODUCT OF MICROSOMAL OXIDATION OF LASIOCARPINE.

IARC. Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Geneva: World Health Organization, International Agency for Research on Cancer, 1972-PRESENT. (Multivolume work). Available at: https://monographs.iarc.fr/ENG/Classification/index.php, p. V10 285 (1976)


IN URINE ... OBTAINED 16 HR AFTER INJECTION ... TO RATS ... UNCHANGED LASIOCARPINE (1-1.5% OF DOSE), HELIOTRIDINE (1.5-3%), HELIOTRIDINE N-OXIDE (6%) & TRACES OF BASES WITH CHROMATOGRAPHIC PROPERTIES OF EUROPINE & 7-ANGELYHELIOTRIDINE (EXPECTED PRODUCTS OF PARTIAL HYDROLYSIS). ... METABOLITES IN 24-HR URINE SAMPLE ... 8.5% OF ADMIN LASIOCARPINE.

IARC. Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Geneva: World Health Organization, International Agency for Research on Cancer, 1972-PRESENT. (Multivolume work). Available at: https://monographs.iarc.fr/ENG/Classification/index.php, p. V10 286 (1976)


HUMAN EMBRYONIC LIVER SLICES CONVERTED THE PYRROLIZIDINE ALKALOID LASIOCARPINE INTO PYRROLES, AS INDICATED BY A POS EHRLICH COLOR REACTION, WHEREAS LUNG TISSUE DID NOT.

ARMSTRONG SJ, ZUCKERMAN AJ; NATURE (LONDON) 228 (5271): 569 (1970)


4.3 Mechanism of Action

Death may be due to actual liver damage or to the upsetting of the copper storage mechanism which leads to a build-up of copper in the organ, resulting in the acute hemolytic crisis associated with chronic copper poisoning.

Humphreys, D.J. Veterinary Toxicology. 3rd ed. London, England: Bailliere Tindell, 1988., p. 236