Screening of l-proline monomer and peptide-mediated kinetic resolution of rac-glyceraldehyde 1^a.

Entry	Peptide	% Conversion	% ee	s-Factor
1	P	n.r.	—	—
2	P-NH2	86	12.2	1.14
3	PV-OMe	56	26.7	1.95
4	PVV	46	22.0	2.16
5	PFV	56	28.2	2.00
6	PVVV	47	21.0	1.96
7	PVFV	51	27.7	2.20
8	PFVV	55	30.1	2.15

^aReaction conditions: 1 : 1 peptide:1; entries 1–3: 100 mM; entry 4 : 20 mM; entries 5–8: 10 mM. Ambient temperature, phosphate buffer, pH 9.5, 6 h.