P

Inventor

ASKIN DAVID

US32 patents
⚠️ This page may combine multiple inventors who share the name “ASKIN DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MERCK & CO INC

29 patents
US4820850AApr 11, 1989

Process for α-C-alkylation of the 8-acyl group on mevinolin and analogs thereof

MERCK & CO INC154 citations99
US5169952ADec 8, 1992

Stereoselective production of hydroxyamide compounds from chiral α-amino epoxides

MERCK & CO INC29 citations92
US6642237B1Nov 4, 2003

Gamma-hydroxy-2-(fluoroalkylaminocarbonyl)-1-piperazinepentanamides and uses thereof

MERCK & CO INC20 citations80
US4920218AApr 24, 1990

Novel hydroxide mediated FK-506 rearrangement process

MERCK & CO INC10 citations74
US5723615AMar 3, 1998

Process for preparing 4-tert-butyloxycarbonyl-(S)-piperazine-2-tert-butylcarboxamide

MERCK & CO INC7 citations73
US5618939AApr 8, 1997

Process for making HIV protease inhibitors

MERCK & CO INC4 citations73
US5612484AMar 18, 1997

Process for making HIV protease inhibitors

MERCK & CO INC12 citations73
US5463067AOct 31, 1995

Process for making HIV protease inhibitors

MERCK & CO INC11 citations73
US5446158AAug 29, 1995

Process for synthesis of FK-506 and tricarbonyl intermediates

MERCK & CO INC7 citations73
US5728840AMar 17, 1998

Process for making an epoxide

MERCK & CO INC7 citations72
US6071916AJun 6, 2000

HIV protease inhibitor

MERCK & CO INC12 citations71
US5929243AJul 27, 1999

Process for the preparation of (S)-3-carbethoxy-3-benzylpiperidine

MERCK & CO INC7 citations70
US5087703AFeb 11, 1992

Process for synthesis of FK-506 intermediates

MERCK & CO INC2 citations63
US4980466ADec 25, 1990

Hydroxide mediated FK-506 rearrangement product

MERCK & CO INC2 citations63
US5637711AJun 10, 1997

Process for making HIV protease inhibitors

MERCK & CO INC3 citations62
US5496948AMar 5, 1996

Process for making HIV protease inhibitors

MERCK & CO INC3 citations62
US5491238AFeb 13, 1996

Process for making HIV protease inhibitors

MERCK & CO INC5 citations62
US6160118ADec 12, 2000

Process for the synthesis of substituted piperazinones via Mitsunobu reaction

MERCK & CO INC6 citations61
US5663341ASep 2, 1997

Process for making HIV protease inhibitors

MERCK & CO INC4 citations61
US5618937AApr 8, 1997

Process to make HIV protease inhibitor from (2S)-4-picolyl-2-piperazine-t-butylcarboxamide

MERCK & CO INC5 citations61
US7598264B2Oct 6, 2009

HIV integrase inhibitors

MERCK & CO INC7 citations59
US5235066AAug 10, 1993

FK-506 type macrolide intermediate

MERCK & CO INC3 citations59
US5508404AApr 16, 1996

Reductive amination process

MERCK & CO INC3 citations58
US6239280B1May 29, 2001

Process for synthesizing biaryl inhibitors of farnesyl-protein transferase

MERCK & CO INC2 citations55
US5861512AJan 19, 1999

Process for making HIV protese inhibitors

MERCK & CO INC0 citations51
US5693803ADec 2, 1997

Process for making HIV protease inhibitors

MERCK & CO INC0 citations51
US5164525ANov 17, 1992

Synthetic process for fk-506 type macrolide intermediates

MERCK & CO INC0 citations49
US6388083B2May 14, 2002

Process for the synthesis of (2S)-phenyl-3-piperidone

MERCK & CO INC1 citations46
US6140508AOct 31, 2000

Process for making 1,5-disubstituted imidazoles

MERCK & CO INC0 citations34

ARRAY BIOPHARMA INC

3 patents