Pyrrolidin Related Compounds

(2'R,3S,4'S,5'R)-6-chloro-4'-(3-chloro-2-fluorophenyl)-N-((S...

2-Pyrrolidinecarbonitrile hydrochloride

(3R)-3-fluoropyrrolidine

(R)-3-propylpyrrolidine

(S)-(+)-N-(1-butenyl)-2-pyrrolidinone-5-carboxaldehyde

(S)-1-Methyl-5-oxopyrrolidine-2-carboxylic acid

(S)-2-Pyrrolidinecarbonitrile hydrochloride

1,1-Dimethyl-3-Hydroxy-Pyrrolidinium Tosylate

1-[1-(2-Thienyl)cyclohexyl]pyrrolidine

1-dodecanoylpyrrolidine-2-carboxylic acid

1-Ethyl-2-methylpyrrolidine

1-Methylpyrrolidine-2,3-dione

2-(2-Fluorophenyl pyrrolidine HCl

2-(4-Bromophenyl)-2-(pyrrolidin-1-yl)acetic Acid

2-(4-fluorophenyl)pyrrolidine hydrochloride

2-(thiophen-3-yl)pyrrolidine

3-isobutyl pyrrolidine 2,5 dione

4-Methoxy-3-(pyrrolidine-1-sulfonyl)benzoic Acid

5-fluoro-2-[(3R)-pyrrolidin-3-yloxy]pyridine

Methyl 2,5-dioxo-1-pyrrolidinecarboxylate

N-pyrrolidino etonitazene

(2-Oxo-4-phenyl-pyrrolidin-1-yl)-acetic acid

(2R)-5-Oxo-2-pyrrolidineacetonitrile

(2R,4S)-1-tert-butyl 2-methyl 4-phenylpyrrolidine-1,2-dicarb...

(2R,4S)-4-Phenylpyrrolidine-2-carboxylic acid

(2R,4S)-Methyl 4-((tert-butoxycarbonyl)amino)pyrrolidine-2-c...

(2R,4S)-methyl 4-phenylpyrrolidine-2-carboxylate

(2S)-2-[Dihexyl[(triphenylsilyl)oxy]methyl]pyrrolidine

(2S,4E)-1-methyl-4-propylidenepyrrolidine-2-carboxylic acid

(2S,4R)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-methoxypyrr...

(2S,4S)-1-Fmoc-4-azidopyrrolidine-2-carboxylic acid

(3S,4R)-1-((benzyloxy)carbonyl)-4-ethylpyrrolidine-3-carboxy...

(3S,4S)-1-((benzyloxy)carbonyl)-4-ethylpyrrolidine-3-carboxy...

(3S,5R)-5-(Hydroxymethyl)pyrrolidin-3-ol hydrochloride

(S)-1-benzyl-3-hydroxypyrrolidine-2,5-dione

(S)-3-Amino-1-(tert-butoxycarbonyl)pyrrolidine-3-carboxylic ...

(S)-4,4-difluoropyrrolidin-3-ol

(S)-Diphenyl(pyrrolidin-2-yl)methanol

(S)-Methyl 1-methylpyrrolidine-2-carboxylate

(S)-pyrrolidine-1,2-dicarboxamide

1-(2-(tert-butyl)phenyl)pyrrolidine

1-(Cyclopent-1-en-1-yl)pyrrolidine

1,1-Dimethylethyl (3R)-3-hydroxy-3-methyl-1-pyrrolidinecarbo...

1,1-Dimethylethyl 4-amino-2-(phenylmethyl)-1-pyrrolidinecarb...

1,3-Dipyrrolidinopropane

1-[2-(Trimethylsilyl)Ethoxycarbonyloxy]Pyrrolidin-2,5-Dione

1-[2-[(3-hydroxy-1-adamantyl)amino]acetyl]pyrrolidine-2-carb...

1-acetyl-4-isobutylpyrrolidine-2-one

1-benzyl-4-ethylpyrrolidin-3-amine

1-propan-2-ylpyrrolidine-2,5-dione

2-(2,5-dioxopyrrolidin-1-yl)ethyl ethyl fumarate

2-(2-Carboxy-phenyl)-pyrrolidine-1-carboxylic acid tert-buty...

2-(5-oxopyrrolidine-2-carboxamido)pentanediamide

2-(Pyrrolidin-3-yl)propan-2-ol

2,2,4-trimethylpyrrolidine hydrochloride

2-Methylpyrrolidine

3-(1-Pyrrolidinyl)acrolein

3-(2-Methoxyphenyl)pyrrolidine

3-(2-oxopyrrolidin-1-yl)butanoic acid

3-(Bromomethyl)-1-methylpyrrolidine hydrobromide

3-(Pyrrolidin-1-yl)-1-(p-tolyl)propan-1-one

3-(pyrrolidin-1-yl)propan-1-ol

3-(pyrrolidin-1-yl)propanal

3-Fluoro-1-pyrrolidinamine

3-Hydroxy-1-methylpyrrolidine-2,5-dione

3-Methylpyrrolidine hydrochloride

5-Ethenyl-2-pyrrolidinone

5-Oxo-1-propyl-2-pyrrolidineacetic Acid

Benzoic acid;3-[(2S)-1-methylpyrrolidin-2-yl]pyridine

Benzyl (2S)-2-{[(3-chloro-2-pyrazinyl)methyl]carbamoyl}-1-py...

cis-3,4-dihydroxypyrrolidine hydrochloride

ethyl 1-benzyl-3-cyanopyrrolidine-3-carboxylate

methyl (S)-2-(pyrrolidin-2-yl)acetate hydrochloride

N-Carboxymethyl Vinylpyrrolidinone

Pyrrolidine

tert-butyl 3-[(2S)-2-(hydroxymethyl)pyrrolidin-1-yl]propanoa...

Tris(1-pyrrolidinyl)phosphine

α-Pyrrolidinopropiophenone Hydrochloride

(1R,2R)-1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-octanamido...

(1R,2S)-2-Pyrrolidino-1-phenyl-1-propanol

(2R)-1-(2-Hydroxyacetyl)-2-pyrrolidinecarbonitrile

(2R)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile

(2R)-Brivaracetam-2,5-dioxo-3-propylpyrrolidin impurity

(2R,4R)-4-(tert-butoxy)-1-[(9H-fluoren-9- ylmethoxy)carbonyl...

(2R,4S)-4-(2-(tert-butoxy)-2-oxoethoxy)pyrrolidine-2-carboxy...

(2R,4S)-Tert-butyl 4-hydroxy-2-(thiazolidine-3-carbonyl)pyrr...

(2R,5S)-2-[(R)-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]phenyl...

(2S)-1-(2-chloro-2-(((1R,3S,5R)-3-hydroxyadamantan-1-yl)amin...

(2S)-1-[2-[{3,5-Dihydroxyadamantan-1-ylamino}acetyl]-pyrroli...

(2S)-2-(2,5-dioxo-3-propylpyrrolidin-1-yl)butanamide

(2S)-N-(tert-Butoxycarbonyl)-2-pyrrolidinamine

(2S,3S)-3-hydroxypyrrolidine-2-carboxylic acid compound with...

(2S,4R)-1-((S)-2-Amino-3,3-dimethylbutanoyl)-4-hydroxy-N-(4-...

(2S,4R)-1-(Diisopropoxyphosphoryl)-4-hydroxypyrrolidine-2-ca...

(2S,4S)-1-(tert-Butoxycarbonyl)-4-(4-(3-methyl-1-phenyl-1H-p...

(2S,4S)-tert-butyl 4-hydroxy-2-(thiazolidine-3-carbonyl)pyrr...

(2S,5R)-tert-butyl 2-(4-aminobenzyl)-5-((R)-hydroxy(phenyl)m...

(3R,4R)-3-Amino-1-Boc-4-hydroxypyrrolidine

(3R,4S)-4-Ethyl-3-pyrrolidinecarboxylic acid

(3S)-N-(5-Chloropyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxy-1-p...

(3S,4S)-N-Boc-3-amino-4-hydroxypyrrolidine

(4R)-4-propylpyrrolidin-2-one

(4R,5S,6S)-3-(((3S,5S)-5-(Aminomethyl)pyrrolidin-3-yl)thio)-...

(4S)-1-(tert-butoxycarbonyl)-4-(4-(3-methyl-1-phenyl-1H-pyra...

(N-((S)-3(2-amino-2oxo-1,1diphenylethyl)pyrrolidin-1-yl)-2-(...

(R)- 3-[(1-Methyl-2-pyrrolidinyl)methyl]-1H-Indole

(R)-((2R,5R)-5-(4-aminobenzyl)pyrrolidin-2-yl)(phenyl)methan...

(R)-(+)-2-(Diphenylmethyl)pyrrolidine

(R)-1-(1-([1,1'-biphenyl]-4-yl)-3-chloropropan-2-yl)pyrrolid...

(R)-1-Benzyl-pyrrolidine-3-carboxylic acid

(R)-2-amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide hydrochl...

(R)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanamide hydrochl...

(R)-3-((1-Methylpyrrolidin-2-yl)methyl)-1,5-bis(2-(phenylsul...

(R)-5-chloro-4-methyl-2-(2-methylpyrrolidin-2-yl)-1H-benzo[d...

(R)-N-(2-benzoyl-4- chlorophenyl )-1-benzyl pyrrolidine-2- c...

(R)-N-(5-(2-(2,5-difluorophenyl) pyrrolidin-1-yl)pyrazolo[1,...

(R)-Pyrrolidine-2-carbonitrile Hydrochloride

(S)​-​2-​amino-​3-​((S)​-​2-​oxopyrrolidin-​3-​yl)​propanami...

(S)-α-Ethyl-2-oxo-1-Pyrrolidineacetic acid, (R)-methylb...

(S)-(-)-1-Boc-2-cyanopyrrolidine

(S)-1-(2-Aminoacetyl)-4,4-difluoropyrrolidine-2-carbonitrile

(S)-1-(2-Aminoacetyl)-4,4-difluoropyrrolidine-2-carbonitrile...

(S)-1-(2-Aminoacetyl)-pyrrolidine-2-carbonitrile

(S)-1-(2-Iodoacetyl)pyrrolidine-2-carbonitrile

(S)-1-(2-Iodoacetyl)pyrrolidine-2-carboxamide

(S)-1-[2-(3-nitroadamantan-1-ylamino) acetyl]pyrrolidine-2-c...

(S)-1-[2-[(3-Hydroxyadamant-1-yl)amino]chloroacetyl]pyrrolid...

(S)-1-acetyl-4-isobutylpyrrolidin-2-one

(S)-1-BOC-3-hydroxypyrrolidine

(S)-2-(2-oxopyrrolidin-1-yl)but-3-enamide

(s)-2-(2-oxopyrrolidin-1-yl)butanenitrile

(S)-2-amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide hydrochl...

(S)-3-Boc-aminopyrrolidine

(S)-4-Isobutyl-1-(((2R,3S,4S,5R)-2,3,4,5-tetrahydroxytetrahy...

(S)-5-chloro-2-(1,2-dimethylpyrrolidin-2-yl)-4-methyl-1H-ben...

(S)-5-oxo-1-((S)-5-oxopyrrolidine-2-carbonyl)pyrrolidine-2-c...

(S)-Boc-3-amino-2-pyrrolidinone

(S)-tert-Butyl pyrrolidin-3-ylmethylcarbamate hydrochloride

1-((4-Aminobenzenemethane)sulfonyl)pyrrolidine

1-({[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl...

1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-3-(pyrrolidin-1-yl)p...

1-(2-aminoacetyl)pyrrolidine-2-carbonitrile

1-(2-chloroacetyl)pyrrolidine-2-carbonitrile

1-(2-hydroxyacetyl)pyrrolidine-2-carbonitrile

1-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-...

1-(4-Chlorophenyl)-2-(1-pyrrolidinyl)-1-pentanone

1-(4-Methylphenyl)-2-(1-pyrrolidinyl)-1-hexanone

1-(tert-Butyl) 2-methyl (2R,4R)-4-(4-(3-methyl-1-phenyl-1H-p...

1-(tert-Butyl) 2-methyl (2S,4R)-4-(4-(3-methyl-1-phenyl-1H-p...

1-(tert-butyl) 2-methyl (2S,4R)-4-fluoropyrrolidine-1,2-dica...

1,1-Dimethylethyl (2R,5S)-2-[(R)-[[(1,1-dimethylethyl)dimeth...

1,5-Dicyclohexyl-1,5-diphenyl-2-(pyrrolidin-1-ylmethyl)penta...

1-[(Benzyloxy)carbonyl]pyrrolidine-2-carboxylic acid

1-Bromo-3-(2S)-2-pyrrolidinylimidazo[1,5-a]pyrazin-8-amine

2-(2,5-Dioxopyrrolidin-1-Yl)Ethyl Methyl Fumarate

2-(2-Oxo-5-vinylpyrrolidin-1-yl) Acetic Acid

2-(2-oxopyrrolidin-1-yl)butanoic anhydride

2-(4-isobutyl-2-oxopyrrolidin-1-yl)acetic acid

2,2-Diphenyl-2-((R)-pyrrolidin-3-yl)acetonitrile hydrobromid...

2,5-dioxopyrrolidin-1-yl ((3S,3aR,6aS)-hexahydrofuro[2,3-b]f...

2a,3a-Epoxy-16β-(1-pyrrolidinyl)-5a-androstan-17β-ol

2-Cyanopyrrolidine

2-Pyrrolidin-1-ylethanamine

2-PyrrolidinecarboxaMide,1-(2-chloroacetyl)-, (2S)

2-Pyrrolidinylphosphonic Acid

3-((2S,4S)-4-hydroxypyrrolidine-2-carboxamido)benzoic acid h...

3-(2-cyclopentylidene-2-phenylacetoxy)-1,1-dimethylpyrrolidi...

3-(bis(4-isobutyl-2-oxopyrrolidin-1-yl)methyl)-5-methylhexan...

3-[[[(2R,4R)-4-Mercapto-2-pyrrolidinyl]carbonyl]amino]benzoi...

3-[2-(Dimethylamino)ethyl]-5-[(1-pyrrolidinylsulfonyl)methyl...

4-((3R,5S)-5-([1,1'-Biphenyl]-4-ylmethyl)-3-methyl-2-oxopyrr...

4-(4-Chlorophenyl)-2-pyrrolidinone

4-(pyrrolidino Sulfonyl Methyl) phenyl Hydrazine Hydrochlori...

4,4′-[(2S)-2-Pyrrolidinyl[(trimethylsilyl)oxy]methylene]bis[...

4-Chloro-2-((3S,4S)-1-methyl-4-phenylpyrrolidin-3-yl)phenol ...

7-(3-(2-carboxyethyl)-4-(hydroxyamino)pyrrolidin-1-yl)-1-cyc...

7-Methyl-2-[(2S)-2-methyl-2-pyrrolidinyl]-1H-benzimidazole

(2R,5R)-2,5-bis(methoxymethyl)pyrrolidine

(3R,4R)-tert-Butyl3-fluoro-4-hydroxypyrrolidine-1-carboxylat...

(aS,3S)-a-[(tert-Butyloxycarbonyl)amino]-2-oxo-3-pyrrolidine...

(S)-2-(Aminomethyl)-1-ethylpyrrolidine

(S)-tert-butyl 2-(5-(6-bromonaphthalen-2-yl)-1H-imidazol-2-y...

(S)-tert-butyl 2-(6-bromo-1H-benzo[d]imidazol-2-yl)pyrrolidi...

1-(1,1-Dimethylethyl) (2R,5R)-5-phenyl-1,2-pyrrolidinedicarb...

1-(1,1-Dimethylethyl) (2S,5S)-5-phenyl-1,2-pyrrolidinedicarb...

1,1-Dimethylethyl (3S)-3-hydroxy-3-methyl-1-pyrrolidinecarbo...

1-Butylpyrrolidin-2-one

1-phenylpyrrolidine-2-carboxylic acid

1-Propylpyrrolidine

2,2-Dimethylpyrrolidine

2,5-Dioxopyrrolidin-1-yl formate

2-Pyrrolidinecarboxaldehyde, 1-(1-butenyl)-5-oxo-, [S-(E)]

3-(1-Pyrrolidinyl)-1-propen-1-ol

3-(1-Pyrrolidinyl)-2-propen-1-ol

3-(4-Methoxybenzoyl)-1-vinylpyrrolidin-2-one

3-(S)-(1-Carbamoyl-1,1-diphenylmethyl)pyrrolidine

5-Bromo-3-[[(2S)-1-methyl-2-pyrrolidinyl]methyl]-1H-indole i...

5-Oxo-1-phenylpyrrolidine-2-carboxylic acid

7-Chloro-4-(2-methyl-1-pyrrolidinyl)-quinoline

Isopropyl 4-((3R,5S)-5-([1,1'-biphenyl]-4-ylmethyl)-3-methyl...

Methyl 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoate

Tert-Butyl 3-(chlorosulfonyl)pyrrolidine-1-carboxylate

Tert-butyl 4-(pyrrolidin-3-yl)piperidine-1-carboxylate

[N-[Phenyl[2-[[[(1S,2R)-1-(phenylmethyl)-2-pyrrolidinyl-κN]c...

(2-Oxo-1-pyrrolidin)-acetic acid

2-[4-[2-(4-Chlorophenyl)-5-(2-oxopyrrolidin-1-yl)benzyloxy]-...

(2S,4S)-4-cyclohexyl-1-nitrosopyrrolidine-2-carboxylic acid

(S)-1-bromo-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyrazi...

(S)-1-bromo-8-chloro-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5...

(S)-1-Nitroso-5-oxopyrrolidine-2-carboxylic Acid

(S)-1-nitrosopyrrolidin-3-amine

(S)-2,2,4-trimethyl-1-nitrosopyrrolidine

(S)-4-(8-amino-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyr...

(S)-8-chloro-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyraz...

(S)-N-((3-chloropyrazin-2-yl)methyl)-1-nitrosopyrrolidine-2-...

2-(1-nitrosopyrrolidin-3-yl)-2,2-diphenylacetamide

2-(1-nitrosopyrrolidin-3-yl)-2,2-diphenylacetonitrile

N-Nitroso Pyrrolidine Ethanol

N-Nitroso-3-pyrrolidinol

(±)-3-Pyrrolidinol-2,2,3,4,4-d5

(S)-2-Hydroxymethyl-1-methyl-d3-pyrrolidine

(S)-2-Hydroxymethyl-1-methyl-d3-pyrrolidine-2,5,5-d3

(S)-2-Hydroxymethyl-d2-1-methyl-d3-pyrrolidine

(S)-2-Hydroxymethyl-d2-pyrrolidine

(S)-2-Hydroxymethylpyrrolidine-2,5,5-d3

Pyrrolidine-​2,​2,​5,​5-​d4

(1R,2R)-2-(N-1,2,3,4-13C4-Octanoyl)-amino-1-(2,3-dihydrobenz...

(1R,2R)-2-(N-Octanoyl-d15)-amino-1-(2,3-dihydrobenzo[b][1,4]...

(1R,2R)-2-(N-Octanoyl-d15)-amino-1-(2,3-dihydrobenzo[b][1,4]...

(2R)-1-Methyl-2-phenylpyrrolidine-D3

(2S)-1-(2-Chloroacetyl)-2-9-pyrrolidinecarbonitrile-d1

(2S)-1-Methyl-2-phenylpyrrolidine-D3

(2S)-2-(Diphenylmethyl)pyrrolidine-d10 Hydrochloride

(2S)-2-Aminomethyl-1-ethylpyrrolidine-d5

(2S,4R)-2-[(Dimethylamino)carbonyl]-4-[(methylsulfonyl)oxy]-...

(2S,4R)-2-[(Dimethylamino)carbonyl]-4-hydroxy-1-pyrrolidinec...

(2S,4S)-4-(Acetylthio)-2-[(dimethylamino)carbonyl]-1-pyrroli...

(2S,4S)-4-(Phenylthio)-1,2-pyrrolidinedicarboxylic-d5 Acid 1...

(2S,4S)-4-(Phenylthio)-1,2-pyrrolidinedicarboxylic-d5 Acid 1...

(2S,5S)-2,5-Dimethylpyrrolidine-d6 Hydrochloride

(3R)​-3-​[[(1,​1-​Dimethylethyl)​dimethylsilyl]​oxy]​-​1-​py...

(3R)​-3-​Hydroxy-1-​pyrrolidinecarboxyli​c Acid Phenylmethyl...

(3R-cis)-(4-Methyl-3-pyrrolidinyl)-carbamic Acid 1,1-Dimethy...

(3S)-1-(2-Methylamino-(2S)-2-phenylethyl)pyrrolidin-3-ol-d5

(3S)-1-Methyl-3-(phenylmethoxy)-2,5-pyrrolidinedione-d3

(3S,5S)-1-Boc-5-(methoxymethyl)pyrrolidine-3-carboxylic Acid...

(R)-(+)-1-Benzyl-3-pyrrolidinol-d4

(R)-2,5-Dioxopyrrolidin-1-yl 2-(4-isopropylbenzamido)-3-phen...

(S)-1-(2-Chloroacetyl)pyrrolidine-2-carboxamide-D3

(S)-1-Ethyl-2-pyrrolidinecarboxamide-d5

(S)-N-[[3-Amino-1-(5-ethyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)p...

(S)-t-Butyl 1-((S)-2-((t-Butoxycarbonyl)amino)propanoyl)pyrr...

1-(4-Bromophenyl-d4)-3-pyrrolidinol

1-[[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2....

1-Dodecyl-2-pyrrolidinone-d6

1-Methyl-2-pyrrolidinone-15N

2-(1-Nitrosopyrrolidin-3-yl)-2,2-bis(phenyl-d5)acetamide

2-(1-Nitrosopyrrolidin-3-yl)-2,2-bis(phenyl-d5)acetonitrile

3-(3-Pyridinylcarbonyl-D4)-1-(trimethylsilyl)-2-pyrrolidinon...

3-(Piperazin-1-yl)pyrrolidine-1-carboxylic Acid tert-Butyl E...

3-[[(2S)-1-Methyl-2-pyrrolidinyl]methyl]-5-[(1E)-2-(phenylsu...

3-[[[(2S,4S)-1-(4-Nitrobenzyloxycarbonyl)-4-mercaptopyrrolid...

4-Isobutyl-2-pyrrolidinone-13C3 (pregabalin lactam impurity)

5-Bromo-3-[[(2S)-1-methyl-2-pyrrolidinyl]methyl]-1H-indole-d...

5-Ethyl-3-[[(2R)-1-methyl-2-pyrrolidinyl]methyl]-1H-indole-d...

5-Hydroxy-N-methyl-2-pyrrolidinone-d3

N-(1,3-Dithiolan-2-ylmethyl)-5-phenyl-6-[4-[2-(1-pyrrolidiny...

N,N'-Di[1-pyrrolidinyl-3,3,4-d3-1-15N-oxy 2,2,5,5-Tetra(meth...

N,N-Dimethylpyrrolidinium-d8 Chloride

N-[(3R,4S)-4-Methyl-3-pyrrolidinyl]-carbamic Acid 1,1-Dimeth...

N2'-Deacetyl-N2'-[3-[(1-ethyl-2,5-dioxo-3-pyrrolidinyl)thio]...

N-Nitrosopyrrolidine D8

N-Nitrosopyrrolidine-13C2,15N

N-tert-Butyloxycarbonyl-2-ethyl-pyrrolidine-13C2

Pyrrolidine-2,2,5,5-d4 Hydrochloride

(2S)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile

1-Methylpyrrolidine