Synthesis of a β‐Mannosyl‐Chitobiosyl‐Asparagine Conjugate—a Central Core Region Unit of the N‐Glycoproteins

10.1016/S0065-2318(08)60021-9

10.1002/ange.19901020804

10.1002/anie.199008233

10.1002/cber.19811140916

10.1016/S0008-6215(00)85522-6

10.1002/ange.19881000822

10.1002/anie.198810861

10.1016/0008-6215(85)90011-4

10.1016/0040-4039(88)85335-8

8: [α]= −24.7 (c= 1 CHCl3);1H NMR (400 MHz CDCl3): δ = 5.86 (d J(1 2) = 7.3 Hz 1H; 1‐H) 4.51 (d J(1′ 2′) = 8.5 Hz 1H; 1′‐H) 4.64 (s 1 H; 1″‐H).

10.1016/0008-6215(88)85097-3

10.1002/ange.19850971033

10.1002/anie.198508831

10.1080/07328308908048003

10.1016/S0008-6215(00)84671-6

11[α]= −25.4 (c= 1 CHCl3);1H‐NMR (400 MHz CDCl3): δ = 7.2 (d J= 8.1 Hz 1 H; γ‐NHAsn) 6.60 (d J(NH; 2) = 7.5 Hz 1 H; 2‐NHAc) 6.44 (s 1 H; 2′‐NHAc) 4.65 (s 1 H; 1″‐H) 2.73 (dd J(gem) = 16 J(Vic) = 3.8 Hz 1 H; β‐CH‐Asn) 1.36 (s 9H tBu).