PATENT CLAIM ANALYSIS

Application Number: 16094279
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["560", "038000"]

Abstract:
A method of preparing D-4,4′-biphenylalanine alkyl ester or L-4,4′-biphenylalanine alkyl ester by subjecting DL-4,4′-biphenylalanine alkyl ester to optical resolution using chiral diaroyl tartaric acid as an optical resolving agent is provided.

Claim (Index 1):
A method of preparing D-4,4\u2032-biphenylalanine alkyl ester of Chemical Formula 3 below or L-4,4\u2032-biphenylalanine alkyl ester of Chemical Formula 4 below, comprising subjecting DL-4,4\u2032-biphenylalanine alkyl ester of Chemical Formula 1 below to optical resolution using, as an optical resolving agent, chiral diaroyl tartaric acid of Chemical Formula 2 below: in Chemical Formulas 1, 3 and 4, R is the same as or different from each other and are a C1 to C4 alkyl group, and * is chiral carbon, and in Chemical Formula 2, X is hydrogen, a C1 to C3 alkyl group, fluorine, chlorine, bromine, iodine, a cyano group or a nitro group.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 97.0
- Lexical Diversity: 1.18519
- Patent Class: 560.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11267448', '15762370', '12519488', '13055385', '12470377']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7170760449912641
- 35 USC 102 Novelty (BERT): 0.5368423079159436
- Combined Prediction Score: 0.699052671283732
- Mean Citation Score: 239.803778
- Max Citation Score: 278.14316
- Similarity Product: 192.1503996962309

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test