Reduction of carvones using the ERs pQR1907, pQR1445 and NCR^a.

ER	(2R,5S)-6	(2R,5R)-7
	Yield [%]	Yield [%]
pQR1907	82	66
pQR1445	81	n.d.
NCR	78	63

^aSubstrate (10 mM), purified ER (0.7–0.8 mg mL⁻¹), NADP⁺ (2.8 mM), G6PDH (20 U), G6PNa (100 mM), in Tris–HCl (50 mM) and DMSO (10%) at pH 7.4, 30 °C, 1 h, 300 rpm. Reactions were performed in triplicate. Yields and ees were determined by GC analysis; n.d. not determined.