Intermediates

1

1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinoline carboxylic acid ethyl ester

112811-71-9

2

1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinoline carboxylic acid

112811-72-0

3

1-Cyclopropyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

94695-52-0

4

4-chloro-1-(2-methylpropyl)-1H-imidazo〔4,5-c〕quinoline

99010-64-7

5

2-chloro-N-(2-methypropyl)-3,4-quinolinediamine

165120-40-1

6

(s)-(-)-indoline-2-carboxylic acid

79815-20-6

7

(2S,3aS,7aS)-Octahydro-1H-indole-2-carboxylic acid

80875-98-5

9

N-[1-(S)-Ethoxycarbonyl-butyl]-L-alanine

82834-12-6

10

O-tert-Butyl-L-threonine tert-butyl ester acetate salt

5854-77-3

11

tert-Butyl (2S,3R)-(+)-6-oxo-2,3-diphenyl-4-morpholinecarboxylate

112741-50-1

12

tert-Butyl (2R,3S)-(-)-6-oxo-2,3-diphenyl-4-morpholinecarboxylate

112741-49-8

13

3,5-Dimethylpiperidine

35794-11-7

15

3-Hydroxypiperidine

6859-99-0

16

1-Ethyl-3-Hydroxypiperidine

13444-24-1

17

Homopiperazine

505-66-8

18

5-Chlorobenzotriazole

94-97-3

19

2-Mercapto-5-methyl-1,3,4-thiadiazole

29490-19-5

20

5-Isoquinolinesulfonic acid

27655-40-9

21

2,6-Diamino-4,5,6,7-tetrahydrobenzothiazole

104617-49-4