PAXLOVID/PF-07321332 for Covid-19 key intermediates are supplied

6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione     CAS:67911-21-1
6,6-Dimethyl-3-azabicyclo[3.1.0]hexane      CAS:943516-54-9
(1R,2S,5S)-6,6-DIMETHYL-3-AZA-BICYCLO[3.1.0]HEXANE-2-CARBOXYLIC ACID METHYL ESTER HYDROCHLORIDE       CAS:565456-77-1
(R)-N-Boc-glutamic acid-1,5-dimethyl ester       CAS:59279-60-6
Methyl (S)-2-(Boc-amino)-3-[(S)-2-oxo-3-pyrrolidinyl]propanoate  

CAS:328086-60-8
N-TFA-tert.Leu-OH       CAS:21735-55-7
L-tert-Leucine        CAS:20859-02-3
N-Boc-L-tert-Leucine        CAS:62965-35-9