Diisopropylethylamine → (R)-3-((R)-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-3-(1-(hydroxymethyl)-cyclopropylamino)-3-oxopropylthio)propane-1,2-diyl didodecanoate

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 2733084	—
Reactant	(1-Aminocyclopropyl)methanol hydrochloride	HCID 14146222	—
Reactant	(5R,9R)-9-(dodecanoyloxy)-1-(9H-fluoren-9-yl)-3,12-dioxo-2,11-dioxa-7-thia-4-azatricosane-5-carboxylic acid	HCID 67414703	—
Solvent	Dichloromethane	HCID 6344	—
Product	(R)-3-((R)-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-3-(1-(hydroxymethyl)-cyclopropylamino)-3-oxopropylthio)propane-1,2-diyl didodecanoate	HCID 67414699	—

Reaction Steps

To a solution of (5R,9R)-9-(dodecanoyloxy)-1-(9H-fluoren-9-yl)-3,12-dioxo-2,11-dioxa-7-thia-4-azatricosane-5-carboxylic acid (6, 1 eq) and HBTU (1.2 eq) in DCM (0.06 M) was added DIEA (3.5 eq), followed by (1-aminocyclopropyl) methanol hydrochloride (1.2 eq). The reaction was stirred at room temperature for 2 hours. The crude mixture was purified by flash chromatography on a COMBIFLASH® system (ISCO) using 30-50% EtOAc/Hex to give (R)-3-((R)-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-3-(1-(hydroxymethyl)cyclopropylamino)-3-oxopropylthio)propane-1,2-diyl didodecanoate.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08808703B2
Source dataset	uspto-grants-2014_08
ORD ID	ord-5f23fbb804604b5d9f7e0fa4ab341e4d
Source note	uspto-grants-2014_08