Piperidine → (S)-2-((E)-3-aminoprop-1-enyl)-7-methoxy-8-(3-((S)-7-methoxy-2-(4-(4-methylpiperazin-1-yl)phenyl)-5,11-dioxo-10-((2-(trimethylsilyl)ethoxy)methyl)-5,10,11,11a-tetrahydro-1H-benzo[e]pyrrolo[1,2-a][1,4]diazepin-8-yloxy)propoxy)-10-((2-(trimethylsilyl)ethoxy)methyl)-1H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H,11aH)-dione

Participants

Role	Name	HCID	Charge
Reactant	Piperidine	HCID 8082	—
Reactant	9H-fluoren-9-ylmethyl N-[(E)-3-[(6aS)-3-[3-[[(6aS)-2-methoxy-8-[4-(4-methylpiperazin-1-yl)phenyl]-6,11-dioxo-5-(2-trimethylsilylethoxymethyl)-6a,7-dihydropyrrolo[2,1-c][1,4]benzodiazepin-3-yl]oxy]propoxy]-2-methoxy-6,11-dioxo-5-(2-trimethylsilylethoxymethyl)-6a,7-dihydropyrrolo[2,1-c][1,4]benzodiazepin-8-yl]prop-2-enyl]carbamate	HCID 131736454	—
Solvent	Dimethylformamide	HCID 6228	—
Solvent	Dichloromethane	HCID 6344	—
Product	(S)-2-((E)-3-aminoprop-1-enyl)-7-methoxy-8-(3-((S)-7-methoxy-2-(4-(4-methylpiperazin-1-yl)phenyl)-5,11-dioxo-10-((2-(trimethylsilyl)ethoxy)methyl)-5,10,11,11a-tetrahydro-1H-benzo[e]pyrrolo[1,2-a][1,4]diazepin-8-yloxy)propoxy)-10-((2-(trimethylsilyl)ethoxy)methyl)-1H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H,11aH)-dione	HCID 90409067	100%

Reaction Steps

Piperidine (0.40 mL, 4.0 mmol, 14.2 eq.) was added to a stirred solution of Fmoc amine 14e (0.358 g, 0.282 mmol, 1.0 eq.) in DMF (5.0 mL). The clear solution was stirred at room temperature for 30 minutes. The reaction mixture was diluted with DCM (300 mL) and washed with water (3×300 mL). The organic layer was dried over MgSO4, filtered and concentrated under reduced pressure to afford the crude product which did not undergo further purification (0.296 g, assumed 100% yield). LC/MS (2.049 min (ES+)), m/z: 1051.2 [M+H]+.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09399073B2
Source dataset	uspto-grants-2016_07
ORD ID	ord-999c5e27b22a4cc6b806eef8fe17b157
Source note	uspto-grants-2016_07