Triphenylphosphine → {3-[9-[(1R,2S,3R,4S)-2,3-Dihydroxy-4-(2-hydroxy-acetylamino)-cyclopentyl]-6-((S)-1-hydroxymethyl-2-phenyl-ethylamino)-9H-purin-2-yl]-prop-2-ynyl}-carbamic acid tert-butyl ester

Participants

Role	Name	HCID	Charge
Reactant	Triphenylphosphine	HCID 11776	—
Reactant	tert-butyl N-(prop-2-yn-1-yl)carbamate	HCID 11073648	—
Reactant	N-{(1S,2R,3S,4R)-4-[6-((S)-1-benzyl-2-hydroxy-ethylamino)-2-chloro-purin-9-yl]-2,3-dihydroxy-cyclopentyl}-2-hydroxy-acetamide	HCID 86632435	—
Catalyst	Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)	HCID 24350	—
Catalyst	HCID 178418476	HCID 178418476	—
Solvent	Dimethylformamide	HCID 6228	—
Solvent	Diethylamine	HCID 8021	—
Product	{3-[9-[(1R,2S,3R,4S)-2,3-Dihydroxy-4-(2-hydroxy-acetylamino)-cyclopentyl]-6-((S)-1-hydroxymethyl-2-phenyl-ethylamino)-9H-purin-2-yl]-prop-2-ynyl}-carbamic acid tert-butyl ester	HCID 67022958	—

Reaction Conditions

Temperature	120 °C

Reaction Steps

N-{(1S,2R,3S,4R)-4-[6-((S)-1-Benzyl-2-hydroxy-ethylamino)-2-chloro-purin-9-yl]-2,3-dihydroxy-cyclopentyl}-2-hydroxy-acetamide (Intermediate GC) (1 eq.), prop-2-ynyl-carbamic acid tert-butyl ester (10 eq.), CuI (0.25 eq.), bis(triphenylphosphine)-palladium(II) chloride (0.25 eq.) and triphenylphosphine (0.5 eq.) are dissolved in diethylamine and DMF. The reaction mixture is heated in a microwave for 1 hour at 120° C. The title compound is obtained by column chromatography.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08193164B2
Source dataset	uspto-grants-2012_06
ORD ID	ord-6f7d5a24724142c0aeb415ce05370028
Source note	uspto-grants-2012_06