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2D Structure
Also known as: Bromocryptine, 25614-03-3, Bromocriptin, Bromoergocryptine, Bromergocryptine, Bromoergocriptine
Molecular Formula
C32H40BrN5O5
Molecular Weight
654.6  g/mol
InChI Key
OZVBMTJYIDMWIL-AYFBDAFISA-N
FDA UNII
3A64E3G5ZO

A semisynthetic ergotamine alkaloid that is a dopamine D2 agonist. It suppresses prolactin secretion.
Bromocriptine is an Ergot Derivative.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(6aR,9R)-5-bromo-N-[(1S,2S,4R,7S)-2-hydroxy-7-(2-methylpropyl)-5,8-dioxo-4-propan-2-yl-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
2.1.2 InChI
InChI=1S/C32H40BrN5O5/c1-16(2)12-24-29(40)37-11-7-10-25(37)32(42)38(24)30(41)31(43-32,17(3)4)35-28(39)18-13-20-19-8-6-9-22-26(19)21(27(33)34-22)14-23(20)36(5)15-18/h6,8-9,13,16-18,23-25,34,42H,7,10-12,14-15H2,1-5H3,(H,35,39)/t18-,23-,24+,25+,31-,32+/m1/s1
2.1.3 InChI Key
OZVBMTJYIDMWIL-AYFBDAFISA-N
2.1.4 Canonical SMILES
CC(C)CC1C(=O)N2CCCC2C3(N1C(=O)C(O3)(C(C)C)NC(=O)C4CN(C5CC6=C(NC7=CC=CC(=C67)C5=C4)Br)C)O
2.1.5 Isomeric SMILES
CC(C)C[C@H]1C(=O)N2CCC[C@H]2[C@]3(N1C(=O)[C@](O3)(C(C)C)NC(=O)[C@H]4CN([C@@H]5CC6=C(NC7=CC=CC(=C67)C5=C4)Br)C)O
2.2 Other Identifiers
2.2.1 UNII
3A64E3G5ZO
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 2 Bromo Alpha Ergocryptine

2. 2 Bromo Alpha Ergokryptine

3. 2 Bromoergocryptine

4. 2 Bromoergocryptine Mesylate

5. 2 Bromoergocryptine Methanesulfonate

6. 2 Bromoergokryptine

7. 2-bromo-alpha-ergocryptine

8. 2-bromo-alpha-ergokryptine

9. 2-bromoergocryptine

10. 2-bromoergocryptine Mesylate

11. 2-bromoergocryptine Methanesulfonate

12. 2-bromoergokryptine

13. Bromocriptin

14. Bromocriptine Mesylate

15. Bromocryptin

16. Cb 154

17. Cb-154

18. Cb154

19. Mesylate, 2-bromoergocryptine

20. Mesylate, Bromocriptine

21. Methanesulfonate, 2-bromoergocryptine

22. Parlodel

2.3.2 Depositor-Supplied Synonyms

1. Bromocryptine

2. 25614-03-3

3. Bromocriptin

4. Bromoergocryptine

5. Bromergocryptine

6. Bromoergocriptine

7. 2-bromo-alpha-ergocryptine

8. 2-bromo-alpha-ergokryptine

9. Bromocriptina

10. Bromocriptinum

11. 2-bromo-alpha-ergokryptin

12. Bromocriptinum [inn-latin]

13. Bromocriptina [inn-spanish]

14. Ergocryptine, 2-bromo-

15. Cb-154

16. Bagren

17. 2-bromoergocryptine

18. 2-bromo-.alpha.-ergocryptine

19. 3a64e3g5zo

20. Chebi:3181

21. Ergotaman-3',6',18-trione, 2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-, (5'alpha)-

22. Ergoset

23. Sandoz 15-754

24. Bromergon

25. (+)-bromocriptine

26. Cb 154

27. 22260-51-1

28. (5'alpha)-2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-3',6',18-trioxoergotaman

29. Ergotaman-3',6',18-trione, 2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-, (5'.alpha.)-

30. Bromocriptine (mesylate)

31. (6ar,9r)-5-bromo-n-[(1s,2s,4r,7s)-2-hydroxy-7-(2-methylpropyl)-5,8-dioxo-4-propan-2-yl-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4h-indolo[4,3-fg]quinoline-9-carboxamide

32. Ccris 3244

33. Nsc169774

34. Einecs 247-128-5

35. Bromocriptine (usan/inn)

36. Unii-3a64e3g5zo

37. Sr-01000075356

38. Bromocriptine [usan:inn:ban]

39. Ncgc00024584-03

40. 08y

41. 2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-alpha-(2-methylpropyl)ergotamin-3',6',18-trione

42. Bromocriptine+ (gtp-)

43. Prestwick0_000121

44. Prestwick1_000121

45. Prestwick2_000121

46. Carboprost Methylate,(s)

47. Dsstox_cid_2687

48. Bromocriptine [mi]

49. Biomol-nt_000005

50. Chembl493

51. Gtpl35

52. Bromocriptine [inn]

53. (5'alpha)-2-bromo-12'-hydroxy-5'-isobutyl-2'-isopropyl-3',6',18-trioxoergotaman

54. Bromocriptine [usan]

55. Dsstox_rid_76692

56. Dsstox_gsid_22687

57. Lopac0_000171

58. Schembl25297

59. Bromocriptine [vandf]

60. (5'alpha)-2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)ergotaman-3',6',18-trione

61. Bidd:gt0464

62. Spbio_002101

63. Bromocriptine [who-dd]

64. Bpbio1_001131

65. Dtxsid1022687

66. Bdbm81993

67. Tox21_110907

68. Pdsp2_001500

69. Zinc53683151

70. Akos015961273

71. Ccg-204266

72. Db01200

73. Sdccgsbi-0050159.p003

74. Dioxooctahydro-2h-oxazolo[3,2-a]pyrrolo

75. Ncgc00024584-04

76. Ncgc00024584-05

77. Ncgc00024584-07

78. Ncgc00024584-09

79. (5'alpha)-2-bromo-12'-hydroxy-5'-(2-methylpropyl)-2'-(propan-2-yl)-3',6',18-trioxoergotaman

80. (6ar,9r)-5-bromo-n-((2r,5s,10as,10bs)-10b-hydroxy-5-isobutyl-2-isopropyl-3,6-dioxooctahydro-2h-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl)-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide

81. Ac-13601

82. Nci60_001365

83. 10b-hydroxy-5-isobutyl-2-isopropyl-3,6-

84. Cas-25614-03-3

85. C06856

86. D03165

87. Hexahydroindolo[4,3-fg]quinoline-9-carboxamide

88. Q413581

89. J-016067

90. Sr-01000075356-5

91. (6ar,9r)-5-bromo-n-((2r,5s,10as,10bs)-

92. [2,1-c]pyrazin-2-yl)-7-methyl-4,6,6a,7,8,9-

93. Brd-k14496212-001-01-1

94. Brd-k14496212-066-04-8

95. (4r,7r)-10-bromo-n-[(1s,2s,4r,7s)-2-hydroxy-7-(2-methylpropyl)-5,8-dioxo-4-(propan-2-yl)-3-oxa-6,9-diazatricyclo[7.3.0.0^{2,6}]dodecan-4-yl]-6-methyl-6,11-diazatetracyclo[7.6.1.0^{2,7}.0^{12,16}]hexadeca-1(16),2,9,12,14-pentaene-4-carboxamide

96. (5alpha,5'beta)-2-bromo-12'-hydroxy-5'-(2-methylpropyl)-3',6',18-trioxo-2'-(propan-2-yl)ergotaman

97. N-[(2r,5s,10as,10bs)-10b-hydroxy-5-isobutyl-2-isopropyl-3,6-dioxo-8,9,10,10a-tetrahydro-5h-oxazolo[[?]]pyrrolo[[?]]pyrazin-2-yl]-bromo-methyl-[?]carboxamide

2.4 Create Date
2005-03-26
3 Chemical and Physical Properties
Molecular Weight 654.6 g/mol
Molecular Formula C32H40BrN5O5
XLogP33.8
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count6
Rotatable Bond Count5
Exact Mass653.22128 g/mol
Monoisotopic Mass653.22128 g/mol
Topological Polar Surface Area118 Ų
Heavy Atom Count43
Formal Charge0
Complexity1230
Isotope Atom Count0
Defined Atom Stereocenter Count6
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 2  
Drug NameParlodel
PubMed HealthBromocriptine (By mouth)
Drug ClassesAntidiabetic, Antiparkinsonian, Prolactin Secretion Inhibitor
Drug LabelParlodel (bromocriptine mesylate) is an ergot derivative with potent dopamine receptor agonist activity. Each Parlodel (bromocriptine mesylate) SnapTabs tablet for oral administration contains 2 mg and each capsule contains 5 mg bromocriptine...
Active IngredientBromocriptine mesylate
Dosage FormTablet; Capsule
RouteOral
Strengtheq 5mg base; eq 2.5mg base
Market StatusPrescription
CompanyUs Pharms Holdings I

2 of 2  
Drug NameParlodel
PubMed HealthBromocriptine (By mouth)
Drug ClassesAntidiabetic, Antiparkinsonian, Prolactin Secretion Inhibitor
Drug LabelParlodel (bromocriptine mesylate) is an ergot derivative with potent dopamine receptor agonist activity. Each Parlodel (bromocriptine mesylate) SnapTabs tablet for oral administration contains 2 mg and each capsule contains 5 mg bromocriptine...
Active IngredientBromocriptine mesylate
Dosage FormTablet; Capsule
RouteOral
Strengtheq 5mg base; eq 2.5mg base
Market StatusPrescription
CompanyUs Pharms Holdings I

4.2 Drug Indication

For the treatment of galactorrhea due to hyperprolactinemia, prolactin-dependent menstrual disorders and infertility, prolactin-secreting adenomas, prolactin-dependent male hypogonadism, as adjunct therapy to surgery or radiotherapy for acromegaly or as monotherapy is special cases, as monotherapy in early Parksinsonian Syndrome or as an adjunct with levodopa in advanced cases with motor complications. Bromocriptine has also been used off-label to treat restless legs syndrome and neuroleptic malignant syndrome.


FDA Label


5 Pharmacology and Biochemistry
5.1 Pharmacology

Bromocriptine stimulates centrally-located dopaminergic receptors resulting in a number of pharmacologic effects. Five dopamine receptor types from two dopaminergic subfamilies have been identified. The dopaminergic D1 receptor subfamily consists of D1 and D5 subreceptors, which are associated with dyskinesias. The dopaminergic D2 receptor subfamily consists of D2, D3 and D4 subreceptors, which are associated with improvement of symptoms of movement disorders. Thus, agonist activity specific for D2 subfamily receptors, primarily D2 and D3 receptor subtypes, are the primary targets of dopaminergic antiparkinsonian agents. It is thought that postsynaptic D2 stimulation is primarily responsible for the antiparkinsonian effect of dopamine agonists, while presynaptic D2 stimulation confers neuroprotective effects. This semisynthetic ergot derivative exhibits potent agonist activity on dopamine D2-receptors. It also exhibits agonist activity (in order of decreasing binding affinity) on 5-hydroxytryptamine (5-HT)1D, dopamine D3, 5-HT1A, 5-HT2A, 5-HT1B, and 5-HT2C receptors, antagonist activity on α2A-adrenergic, α2C, α2B, and dopamine D1 receptors, partial agonist activity at receptor 5-HT2B, and inactivates dopamine D4 and 5-HT7 receptors. Parkinsonian Syndrome manifests when approximately 80% of dopaminergic activity in the nigrostriatal pathway of the brain is lost. As this striatum is involved in modulating the intensity of coordinated muscle activity (e.g. movement, balance, walking), loss of activity may result in dystonia (acute muscle contraction), Parkinsonism (including symptoms of bradykinesia, tremor, rigidity, and flattened affect), akathesia (inner restlessness), tardive dyskinesia (involuntary muscle movements usually associated with long-term loss of dopaminergic activity), and neuroleptic malignant syndrome, which manifests when complete blockage of nigrostriatal dopamine occurs. High dopaminergic activity in the mesolimbic pathway of the brain causes hallucinations and delusions; these side effects of dopamine agonists are manifestations seen in patients with schizophrenia who have overractivity in this area of the brain. The hallucinogenic side effects of dopamine agonists may also be due to 5-HT2A agonism. The tuberoinfundibular pathway of the brain originates in the hypothalamus and terminates in the pituitary gland. In this pathway, dopamine inhibits lactotrophs in anterior pituitary from secreting prolactin. Increased dopaminergic activity in the tuberoinfundibular pathway inhibits prolactin secretion making bromocriptine an effective agent for treating disorders associated with hypersecretion of prolactin. Pulmonary fibrosis may be associated bromocriptines agonist activity at 5-HT1B and 5-HT2B receptors.


5.2 MeSH Pharmacological Classification

Antiparkinson Agents

Agents used in the treatment of Parkinson's disease. The most commonly used drugs act on the dopaminergic system in the striatum and basal ganglia or are centrally acting muscarinic antagonists. (See all compounds classified as Antiparkinson Agents.)


Dopamine Agonists

Drugs that bind to and activate dopamine receptors. (See all compounds classified as Dopamine Agonists.)


Hormone Antagonists

Chemical substances which inhibit the function of the endocrine glands, the biosynthesis of their secreted hormones, or the action of hormones upon their specific sites. (See all compounds classified as Hormone Antagonists.)


5.3 FDA Pharmacological Classification
5.3.1 Active Moiety
BROMOCRIPTINE
5.3.2 FDA UNII
3A64E3G5ZO
5.3.3 Pharmacological Classes
Established Pharmacologic Class [EPC] - Ergot Derivative
5.4 ATC Code

G02CB01

S76 | LUXPHARMA | Pharmaceuticals Marketed in Luxembourg | Pharmaceuticals marketed in Luxembourg, as published by d'Gesondheetskeess (CNS, la caisse nationale de sante, www.cns.lu), mapped by name to structures using CompTox by R. Singh et al. (in prep.). List downloaded from https://cns.public.lu/en/legislations/textes-coordonnes/liste-med-comm.html. Dataset DOI:10.5281/zenodo.4587355


G - Genito urinary system and sex hormones

G02 - Other gynecologicals

G02C - Other gynecologicals

G02CB - Prolactine inhibitors

G02CB01 - Bromocriptine


N - Nervous system

N04 - Anti-parkinson drugs

N04B - Dopaminergic agents

N04BC - Dopamine agonists

N04BC01 - Bromocriptine


5.5 Absorption, Distribution and Excretion

Absorption

Approximately 28% of the oral dose is absorbed; however due to a substantial first pass effect, only 6% of the oral dose reaches the systemic circulation unchanged. Bromocriptine and its metabolites appear in the blood as early as 10 minutes following oral administration and peak plasma concentration are reached within 1-1.5 hours. Serum prolactin may be decreased within 2 hours or oral administration with a maximal effect achieved after 8 hours. Growth hormone concentrations in patients with acromegaly is reduced within 1-2 hours with a single oral dose of 2.5 mg and decreased growth hormone concentrations persist for at least 4-5 hours.


Route of Elimination

Parent drug and metabolites are almost completely excreted via the liver, and only 6% eliminated via the kidney.


5.6 Metabolism/Metabolites

Completely metabolized by the liver, primarily by hydrolysis of the amide bond to produce lysergic acid and a peptide fragment, both inactive and non-toxic. Bromocriptine is metabolized by cytochrome P450 3A4 and excreted primarily in the feces via biliary secretion.


Bromocriptine has known human metabolites that include 5-bromo-N-[2,10-dihydroxy-7-(2-methylpropyl)-5,8-dioxo-4-propan-2-yl-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide and 5-bromo-N-[2,11-dihydroxy-7-(2-methylpropyl)-5,8-dioxo-4-propan-2-yl-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide.

S73 | METXBIODB | Metabolite Reaction Database from BioTransformer | DOI:10.5281/zenodo.4056560


5.7 Biological Half-Life

2-8 hours


5.8 Mechanism of Action

The dopamine D2 receptor is a 7-transmembrane G-protein coupled receptor associated with Gi proteins. In lactotrophs, stimulation of dopamine D2 receptor causes inhibition of adenylyl cyclase, which decreases intracellular cAMP concentrations and blocks IP3-dependent release of Ca2+ from intracellular stores. Decreases in intracellular calcium levels may also be brought about via inhibition of calcium influx through voltage-gated calcium channels, rather than via inhibition of adenylyl cyclase. Additionally, receptor activation blocks phosphorylation of p42/p44 MAPK and decreases MAPK/ERK kinase phosphorylation. Inhibition of MAPK appears to be mediated by c-Raf and B-Raf-dependent inhibition of MAPK/ERK kinase. Dopamine-stimulated growth hormone release from the pituitary gland is mediated by a decrease in intracellular calcium influx through voltage-gated calcium channels rather than via adenylyl cyclase inhibition. Stimulation of dopamine D2 receptors in the nigrostriatal pathway leads to improvements in coordinated muscle activity in those with movement disorders.