1,3-dithiolane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was synthesized from 1,3-dithiolane derivative of Ph2CHCO-Leu-Phe-COOEt and N-aminopropylmorpholine, and purified by column chromatography using AcOEt followed by crystallization from AcOEt/ether (20% yield). Yellow solid, single spot on TLC, Rf =0.45 (AcOET/CH3OH 9:1), mp 158°-160° C. 1H NMR (CDCl3) ok, MS (FAB) m/e=627 (M+1). Anal: calcd. for C37H46N4O5, 626; C, 70.90; H, 7.40; N, 8.94. Found, C, 70.05; H, 7.43; N, 8.68. purified by column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was prepared from 1,3-dithiolane derivative of Z-Leu-Abu-COOEt and 2-aminomethylquinoline by the procedure described in Example 38, and purified by column chromatography using AcOEt/hexane 2:1 (16% yield). Yellow solid, single spot on TLC, Rf =0.27 (AcOEt/hexane 2:1), mp 135°-138° C. 1H NMR (CDCl3) ok, MS (FAB) m/e=519 (M+1). Anal: calcd. for C29H34N4O5, 518; C, 67.16; H, 6.60; N, 10.80. Found, C, 66.89; H, 6.68; N, 10.61. purified by column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was prepared from 1,3-dithiolane derivative of Z-Leu-Abu-COOEt and 2-aminomethylquinoline by the procedure described in Example 38, and purified by column chromatography using AcOEt/hexane 2:1 (16% yield). Yellow solid, single spot on TLC, Rf =0.27 (AcOEt/hexane 2:1), mp 135°-138° C. 1H NMR (CDCl3) ok, MS (FAB) m/e=519 (M+1). Anal: calcd. for C29H34N4O5, 518; C, 67.16; H, 6.60; N, 10.80. Found, C, 66.89; H, 6.68; N, 10.61. purified by column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was synthesized from 1,3-dithiolane derivative of Ph2CHCO-Leu-Phe-COOEt and N-aminopropylmorpholine, and purified by column chromatography using AcOEt followed by crystallization from AcOEt/ether (20% yield). Yellow solid, single spot on TLC, Rf =0.45 (AcOET/CH3OH 9:1), mp 158°-160° C. 1H NMR (CDCl3) ok, MS (FAB) m/e=627 (M+1). Anal: calcd. for C37H46N4O5, 626; C, 70.90; H, 7.40; N, 8.94. Found, C, 70.05; H, 7.43; N, 8.68. purified by column chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was prepared from 1,3-dithiolane derivative of Z-Leu-Abu-COOEt and 2-aminomethylquinoline by the procedure described in Example 38, and purified by column chromatography using AcOEt/hexane 2:1 (16% yield). Yellow solid, single spot on TLC, Rf =0.27 (AcOEt/hexane 2:1), mp 135°-138° C. 1H NMR (CDCl3) ok, MS (FAB) m/e=519 (M+1). Anal: calcd. for C29H34N4O5, 518; C, 67.16; H, 6.60; N, 10.80. Found, C, 66.89; H, 6.68; N, 10.61. purified by column chromatography